diff --git a/Content.Client/Atmos/Monitor/AtmosMonitorVisualizer.cs b/Content.Client/Atmos/Monitor/AtmosMonitorVisualizer.cs
new file mode 100644
index 0000000000..dc86118e1e
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/AtmosMonitorVisualizer.cs
@@ -0,0 +1,67 @@
+using System.Collections.Generic;
+using Content.Shared.Atmos.Monitor;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization.Manager.Attributes;
+
+namespace Content.Client.Atmos.Monitor
+{
+    public class AtmosMonitorVisualizer : AppearanceVisualizer
+    {
+        [Dependency] IEntityManager _entityManager = default!;
+        [DataField("layerMap")]
+        private string _layerMap { get; } = string.Empty;
+
+        [DataField("alarmStates")]
+        private readonly Dictionary<AtmosMonitorAlarmType, string> _alarmStates = new();
+
+        [DataField("hideOnDepowered")]
+        private readonly List<string>? _hideOnDepowered;
+
+        // eh...
+        [DataField("setOnDepowered")]
+        private readonly Dictionary<string, string>? _setOnDepowered;
+
+        public override void InitializeEntity(EntityUid entity)
+        {
+            base.InitializeEntity(entity);
+
+            IoCManager.InjectDependencies(this);
+        }
+
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            if (!_entityManager.TryGetComponent<SpriteComponent>(component.Owner, out var sprite))
+                return;
+
+            if (!sprite.LayerMapTryGet(_layerMap, out int layer))
+                return;
+
+            if (component.TryGetData<bool>("powered", out var powered))
+            {
+                if (_hideOnDepowered != null)
+                    foreach (var visLayer in _hideOnDepowered)
+                        if (sprite.LayerMapTryGet(visLayer, out int powerVisibilityLayer))
+                            sprite.LayerSetVisible(powerVisibilityLayer, powered);
+
+                if (_setOnDepowered != null && !powered)
+                    foreach (var (setLayer, state) in _setOnDepowered)
+                        if (sprite.LayerMapTryGet(setLayer, out int setStateLayer))
+                            sprite.LayerSetState(setStateLayer, new RSI.StateId(state));
+            }
+
+            if (component.TryGetData<Vector2>("offset", out Vector2 offset))
+            {
+                sprite.Offset = offset;
+            }
+
+            if (component.TryGetData<AtmosMonitorAlarmType>("alarmType", out var alarmType)
+                && powered)
+                if (_alarmStates.TryGetValue(alarmType, out var state))
+                    sprite.LayerSetState(layer, new RSI.StateId(state));
+        }
+    }
+}
diff --git a/Content.Client/Atmos/Monitor/UI/AirAlarmBoundUserInterface.cs b/Content.Client/Atmos/Monitor/UI/AirAlarmBoundUserInterface.cs
new file mode 100644
index 0000000000..0c28dd3b0e
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/AirAlarmBoundUserInterface.cs
@@ -0,0 +1,87 @@
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Client.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+
+namespace Content.Client.Atmos.Monitor.UI
+{
+    public class AirAlarmBoundUserInterface : BoundUserInterface
+    {
+        private AirAlarmWindow? _window;
+
+        public AirAlarmBoundUserInterface(ClientUserInterfaceComponent owner, object uiKey) : base(owner, uiKey)
+        {}
+
+        protected override void Open()
+        {
+            base.Open();
+
+            _window = new AirAlarmWindow();
+
+            if (State != null) UpdateState(State);
+
+            _window.OpenCentered();
+
+            _window.OnClose += Close;
+            _window.AtmosDeviceDataChanged += OnDeviceDataChanged;
+            _window.AtmosAlarmThresholdChanged += OnThresholdChanged;
+            _window.AirAlarmModeChanged += OnAirAlarmModeChanged;
+            _window.ResyncAllRequested += ResyncAllDevices;
+        }
+
+        private void ResyncAllDevices()
+        {
+            SendMessage(new AirAlarmResyncAllDevicesMessage());
+        }
+
+        private void OnDeviceDataChanged(string address, IAtmosDeviceData data)
+        {
+            SendMessage(new AirAlarmUpdateDeviceDataMessage(address, data));
+        }
+
+        private void OnAirAlarmModeChanged(AirAlarmMode mode)
+        {
+            SendMessage(new AirAlarmUpdateAlarmModeMessage(mode));
+        }
+
+        private void OnThresholdChanged(AtmosMonitorThresholdType type, AtmosAlarmThreshold threshold, Gas? gas = null)
+        {
+            SendMessage(new AirAlarmUpdateAlarmThresholdMessage(type, threshold, gas));
+        }
+
+        protected override void ReceiveMessage(BoundUserInterfaceMessage message)
+        {
+            if (_window == null)
+                return;
+
+            switch (message)
+            {
+                case AirAlarmSetAddressMessage addrMsg:
+                    _window.SetAddress(addrMsg.Address);
+                    break;
+                case AirAlarmUpdateDeviceDataMessage deviceMsg:
+                    _window.UpdateDeviceData(deviceMsg.Address, deviceMsg.Data);
+                    break;
+                case AirAlarmUpdateAlarmModeMessage alarmMsg:
+                    _window.UpdateModeSelector(alarmMsg.Mode);
+                    break;
+                case AirAlarmUpdateAlarmThresholdMessage thresholdMsg:
+                    _window.UpdateThreshold(ref thresholdMsg);
+                    break;
+                case AirAlarmUpdateAirDataMessage airDataMsg:
+                    _window.UpdateGasData(ref airDataMsg.AirData);
+                    break;
+            }
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing) _window?.Dispose();
+        }
+    }
+}
diff --git a/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml b/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml
new file mode 100644
index 0000000000..a75894647a
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml
@@ -0,0 +1,75 @@
+<SS14Window xmlns="https://spacestation14.io"
+            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+            MinSize="500 500" Title="Air Alarm">
+    <BoxContainer Orientation="Vertical" Margin="5 5 5 5">
+        <!-- Status (pressure, temperature, alarm state, device total, address, etc) -->
+        <BoxContainer Orientation="Horizontal" Margin="0 0 0 2">
+            <!-- Left column (pressure, temperature, alarm state) -->
+            <BoxContainer Orientation="Horizontal" HorizontalExpand="True">
+                <BoxContainer Orientation="Vertical" Margin="0 0 2 0" HorizontalExpand="True">
+                    <Label Text="{Loc 'air-alarm-ui-window-pressure-label'}" />
+                    <Label Text="{Loc 'air-alarm-ui-window-temperature-label'}" />
+                    <Label Text="{Loc 'air-alarm-ui-window-alarm-state-label'}" />
+                </BoxContainer>
+                <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                    <RichTextLabel Name="CPressureLabel" />
+                    <RichTextLabel Name="CTemperatureLabel" />
+                    <RichTextLabel Name="CStatusLabel" />
+                </BoxContainer>
+            </BoxContainer>
+            <!-- Right column (address, device total) -->
+            <BoxContainer Orientation="Horizontal" Margin="0 0 2 0" HorizontalExpand="True">
+                <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                </BoxContainer>
+                <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                </BoxContainer>
+            </BoxContainer>
+
+        </BoxContainer>
+        <!-- Gas/Device Data -->
+        <TabContainer Name="CTabContainer" VerticalExpand="True" Margin="0 0 0 2">
+            <!-- Gas readout -->
+            <ScrollContainer VerticalExpand="True">
+                <BoxContainer Name="CGasContainer" Orientation="Vertical" VerticalExpand="True" Margin="2 2 2 2" />
+            </ScrollContainer>
+            <!-- Vent devices -->
+            <ScrollContainer VerticalExpand="True">
+                <BoxContainer Name="CVentContainer" Orientation="Vertical"/>
+            </ScrollContainer>
+            <!-- Scrubber devices -->
+            <ScrollContainer VerticalExpand="True">
+                <BoxContainer Name="CScrubberContainer" Orientation="Vertical"/>
+            </ScrollContainer>
+            <!-- Alarm thresholds -->
+            <ScrollContainer VerticalExpand="True">
+                <BoxContainer Orientation="Vertical" VerticalExpand="True">
+                    <BoxContainer Name="CPressureThreshold" Orientation="Vertical" Margin="2 0 2 0" />
+                    <BoxContainer Name="CTemperatureThreshold" Orientation="Vertical" Margin="2 0 2 0" />
+                    <Collapsible Orientation="Vertical">
+                        <CollapsibleHeading Title="Gases" />
+                        <CollapsibleBody Margin="4 2 4 2">
+                            <BoxContainer Name="CGasThresholdContainer" Orientation="Vertical" Margin="2 0 2 0" />
+                        </CollapsibleBody>
+                    </Collapsible>
+                </BoxContainer>
+            </ScrollContainer>
+        </TabContainer>
+
+        <BoxContainer Orientation="Horizontal" HorizontalExpand="True" Margin="0 0 0 2">
+            <BoxContainer Orientation="Horizontal" HorizontalExpand="True">
+                <Label Text="{Loc 'air-alarm-ui-window-address-label'}" HorizontalExpand="True"/>
+                <Label Name="CDeviceAddress" HorizontalAlignment="Right" HorizontalExpand="True" Margin="0 0 4 0" />
+            </BoxContainer>
+            <BoxContainer Orientation="Horizontal" HorizontalExpand="True">
+                <Label Text="{Loc 'air-alarm-ui-window-device-count-label'}" HorizontalExpand="True"/>
+                <Label Name="CDeviceTotal" HorizontalAlignment="Right" HorizontalExpand="True" Margin="0 0 4 0" />
+            </BoxContainer>
+            <Button Name="CResyncButton" Text="{Loc 'air-alarm-ui-window-resync-devices-label'}" HorizontalExpand="True" />
+        </BoxContainer>
+        <!-- Mode buttons -->
+        <BoxContainer Orientation="Horizontal">
+            <Label Text="{Loc 'air-alarm-ui-window-mode-label'}" Margin="0 0 2 0" />
+            <OptionButton Name="CModeButton" HorizontalExpand="True" />
+        </BoxContainer>
+    </BoxContainer>
+</SS14Window>
diff --git a/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml.cs b/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml.cs
new file mode 100644
index 0000000000..dfbecf651a
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/AirAlarmWindow.xaml.cs
@@ -0,0 +1,196 @@
+using System;
+using System.Collections.Generic;
+using Content.Client.Atmos.Monitor.UI.Widgets;
+using Content.Client.Message;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Atmos.Piping.Unary.Components;
+using Content.Shared.Temperature;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Localization;
+
+namespace Content.Client.Atmos.Monitor.UI
+{
+    [GenerateTypedNameReferences]
+    public partial class AirAlarmWindow : SS14Window
+    {
+        public event Action<string, IAtmosDeviceData>? AtmosDeviceDataChanged;
+        public event Action<AtmosMonitorThresholdType, AtmosAlarmThreshold, Gas?>? AtmosAlarmThresholdChanged;
+        public event Action<AirAlarmMode>? AirAlarmModeChanged;
+        public event Action<string>? ResyncDeviceRequested;
+        public event Action? ResyncAllRequested;
+
+        private Label _address => CDeviceAddress;
+        private Label _deviceTotal => CDeviceTotal;
+        private RichTextLabel _pressure => CPressureLabel;
+        private RichTextLabel _temperature => CTemperatureLabel;
+        private RichTextLabel _alarmState => CStatusLabel;
+
+        private TabContainer _tabContainer => CTabContainer;
+        private BoxContainer _gasReadout => CGasContainer;
+        private BoxContainer _ventDevices => CVentContainer;
+        private BoxContainer _scrubberDevices => CScrubberContainer;
+        private BoxContainer _pressureThreshold => CPressureThreshold;
+        private BoxContainer _temperatureThreshold => CTemperatureThreshold;
+        private BoxContainer _gasThreshold => CGasThresholdContainer;
+
+        private Dictionary<string, PumpControl> _pumps = new();
+        private Dictionary<string, ScrubberControl> _scrubbers = new();
+        private Button _resyncDevices => CResyncButton;
+
+        private ThresholdControl? _pressureThresholdControl;
+        private ThresholdControl? _temperatureThresholdControl;
+        private Dictionary<Gas, ThresholdControl> _gasThresholdControls = new();
+
+        private Dictionary<Gas, Label> _gasLabels = new();
+
+        private OptionButton _modes => CModeButton;
+
+        public AirAlarmWindow()
+        {
+            RobustXamlLoader.Load(this);
+
+            foreach (var mode in Enum.GetValues<AirAlarmMode>())
+                _modes.AddItem($"{mode}", (int) mode);
+
+            _modes.OnItemSelected += args =>
+            {
+                _modes.SelectId(args.Id);
+                AirAlarmModeChanged!.Invoke((AirAlarmMode) args.Id);
+            };
+
+            foreach (var gas in Enum.GetValues<Gas>())
+            {
+                var gasLabel = new Label();
+                _gasReadout.AddChild(gasLabel);
+                _gasLabels.Add(gas, gasLabel);
+            }
+
+            _tabContainer.SetTabTitle(0, Loc.GetString("air-alarm-ui-window-tab-gas"));
+            _tabContainer.SetTabTitle(1, Loc.GetString("air-alarm-ui-window-tab-vents"));
+            _tabContainer.SetTabTitle(2, Loc.GetString("air-alarm-ui-window-tab-scrubbers"));
+            _tabContainer.SetTabTitle(3, Loc.GetString("air-alarm-ui-window-tab-thresholds"));
+
+            _resyncDevices.OnPressed += _ =>
+            {
+                _ventDevices.RemoveAllChildren();
+                _pumps.Clear();
+                _scrubberDevices.RemoveAllChildren();
+                _scrubbers.Clear();
+                ResyncAllRequested!.Invoke();
+            };
+        }
+
+        public void SetAddress(string address)
+        {
+            _address.Text = address;
+        }
+
+        public void UpdateGasData(ref AirAlarmAirData state)
+        {
+            _pressure.SetMarkup(Loc.GetString("air-alarm-ui-window-pressure", ("pressure", $"{state.Pressure:0.##}")));
+            _temperature.SetMarkup(Loc.GetString("air-alarm-ui-window-temperature", ("tempC", $"{TemperatureHelpers.KelvinToCelsius(state.Temperature ?? 0):0.#}"), ("temperature", $"{state.Temperature:0.##}")));
+            _alarmState.SetMarkup(Loc.GetString("air-alarm-ui-window-alarm-state", ("state", $"{state.AlarmState}")));
+
+            if (state.Gases != null)
+                foreach (var (gas, amount) in state.Gases)
+                    _gasLabels[gas].Text = Loc.GetString("air-alarm-ui-gases", ("gas", $"{gas}"), ("amount", $"{amount:0.####}"), ("percentage", $"{(amount / state.TotalMoles):0.##}"));
+        }
+
+        public void UpdateModeSelector(AirAlarmMode mode)
+        {
+            _modes.SelectId((int) mode);
+        }
+
+        public void UpdateDeviceData(string addr, IAtmosDeviceData device)
+        {
+            switch (device)
+            {
+                case GasVentPumpData pump:
+                    if (!pump.Dirty) pump = GasVentPumpData.Default();
+
+                    if (!_pumps.TryGetValue(addr, out var pumpControl))
+                    {
+                        var control= new PumpControl(pump, addr);
+                        control.PumpDataChanged += AtmosDeviceDataChanged!.Invoke;
+                        _pumps.Add(addr, control);
+                        CVentContainer.AddChild(control);
+                    }
+                    else
+                    {
+                        pumpControl.ChangeData(pump);
+                    }
+
+                    break;
+                case GasVentScrubberData scrubber:
+                    if (!scrubber.Dirty) scrubber = GasVentScrubberData.Default();
+
+                    if (!_scrubbers.TryGetValue(addr, out var scrubberControl))
+                    {
+                        var control = new ScrubberControl(scrubber, addr);
+                        control.ScrubberDataChanged += AtmosDeviceDataChanged!.Invoke;
+                        _scrubbers.Add(addr, control);
+                        CScrubberContainer.AddChild(control);
+                    }
+                    else
+                    {
+                        scrubberControl.ChangeData(scrubber);
+                    }
+
+                    break;
+            }
+
+            _deviceTotal.Text = $"{_pumps.Count + _scrubbers.Count}";
+        }
+
+        public void UpdateThreshold(ref AirAlarmUpdateAlarmThresholdMessage message)
+        {
+            switch (message.Type)
+            {
+                case AtmosMonitorThresholdType.Pressure:
+                    if (_pressureThresholdControl == null)
+                    {
+                        _pressureThresholdControl = new ThresholdControl(Loc.GetString("air-alarm-ui-thresholds-pressure-title"), message.Threshold, message.Type);
+                        _pressureThresholdControl.ThresholdDataChanged += AtmosAlarmThresholdChanged!.Invoke;
+                        _pressureThreshold.AddChild(_pressureThresholdControl);
+                    }
+                    else
+                    {
+                        _pressureThresholdControl.UpdateThresholdData(message.Threshold);
+                    }
+
+                    break;
+                case AtmosMonitorThresholdType.Temperature:
+                    if (_temperatureThresholdControl == null)
+                    {
+                        _temperatureThresholdControl = new ThresholdControl(Loc.GetString("air-alarm-ui-thresholds-temperature-title"), message.Threshold, message.Type);
+                        _temperatureThresholdControl.ThresholdDataChanged += AtmosAlarmThresholdChanged!.Invoke;
+                        _temperatureThreshold.AddChild(_temperatureThresholdControl);
+                    }
+                    else
+                    {
+                        _temperatureThresholdControl.UpdateThresholdData(message.Threshold);
+                    }
+
+                    break;
+                case AtmosMonitorThresholdType.Gas:
+                    if (_gasThresholdControls.TryGetValue((Gas) message.Gas!, out var control))
+                    {
+                        control.UpdateThresholdData(message.Threshold);
+                        break;
+                    }
+
+                    var gasThreshold = new ThresholdControl(Loc.GetString($"air-alarm-ui-thresholds-gas-title", ("gas", $"{(Gas) message.Gas!}")), message.Threshold, AtmosMonitorThresholdType.Gas, (Gas) message.Gas!, 100);
+                    gasThreshold.ThresholdDataChanged += AtmosAlarmThresholdChanged!.Invoke;
+                    _gasThresholdControls.Add((Gas) message.Gas!, gasThreshold);
+                    _gasThreshold.AddChild(gasThreshold);
+
+                    break;
+            }
+        }
+    }
+}
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml b/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml
new file mode 100644
index 0000000000..20bb895596
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml
@@ -0,0 +1,36 @@
+<BoxContainer xmlns="https://spacestation14.io"
+         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+         Orientation="Vertical" Margin="2 0 2 4">
+    <Collapsible Orientation="Vertical">
+        <CollapsibleHeading Name="CAddress" />
+        <!-- Upper row: toggle, direction, checks -->
+        <CollapsibleBody>
+            <BoxContainer Orientation="Vertical">
+                <BoxContainer Orientation="Horizontal" Margin ="0 0 0 2">
+                    <CheckBox Name="CEnableDevice" Text="{Loc 'air-alarm-ui-widget-enable'}" />
+                </BoxContainer>
+                <BoxContainer Orientation="Horizontal" Margin="0 0 0 2" HorizontalExpand="True">
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-vent-pump-label'}" Margin="0 0 0 1" />
+                        <OptionButton Name="CPumpDirection" />
+                    </BoxContainer>
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-vent-pressure-label'}" Margin="0 0 0 1" />
+                        <OptionButton Name="CPressureCheck" />
+                    </BoxContainer>
+                </BoxContainer>
+                <!-- Lower row: pressure bounds -->
+                <BoxContainer Orientation="Horizontal" HorizontalExpand="True">
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-vent-external-bound-label'}" Margin="0 0 0 1" />
+                        <FloatSpinBox Name="CExternalBound" HorizontalExpand="True" />
+                    </BoxContainer>
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-vent-internal-bound-label'}" Margin="0 0 0 1" />
+                        <FloatSpinBox Name="CInternalBound" HorizontalExpand="True" />
+                    </BoxContainer>
+                </BoxContainer>
+            </BoxContainer>
+        </CollapsibleBody>
+    </Collapsible>
+</BoxContainer>
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml.cs b/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml.cs
new file mode 100644
index 0000000000..071bac229a
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/PumpControl.xaml.cs
@@ -0,0 +1,103 @@
+using System;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Atmos.Piping.Unary.Components;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Localization;
+
+namespace Content.Client.Atmos.Monitor.UI.Widgets
+{
+    [GenerateTypedNameReferences]
+    public partial class PumpControl : BoxContainer
+    {
+        private GasVentPumpData _data;
+        private string _address;
+
+        public event Action<string, IAtmosDeviceData>? PumpDataChanged;
+
+        private CheckBox _enabled => CEnableDevice;
+        private CollapsibleHeading _addressLabel => CAddress;
+        private OptionButton _pumpDirection => CPumpDirection;
+        private OptionButton _pressureCheck => CPressureCheck;
+        private FloatSpinBox _externalBound => CExternalBound;
+        private FloatSpinBox _internalBound => CInternalBound;
+
+        public PumpControl(GasVentPumpData data, string address)
+        {
+            RobustXamlLoader.Load(this);
+
+            this.Name = address;
+
+            _data = data;
+            _address = address;
+
+            _addressLabel.Title = Loc.GetString("air-alarm-ui-atmos-net-device-label", ("address", $"{address}"));
+
+            _enabled.Pressed = data.Enabled;
+            _enabled.OnToggled += _ =>
+            {
+                _data.Enabled = _enabled.Pressed;
+                PumpDataChanged?.Invoke(_address, _data);
+            };
+
+            _internalBound.Value = (float) _data.InternalPressureBound!;
+            _internalBound.OnValueChanged += _ =>
+            {
+                _data.InternalPressureBound = _internalBound.Value;
+                PumpDataChanged?.Invoke(_address, _data);
+            };
+            _internalBound.IsValid += value => value >= 0;
+
+            _externalBound.Value = (float) _data.ExternalPressureBound!;
+            _externalBound.OnValueChanged += _ =>
+            {
+                _data.ExternalPressureBound = _externalBound.Value;
+                PumpDataChanged?.Invoke(_address, _data);
+            };
+            _externalBound.IsValid += value => value >= 0;
+
+            foreach (var value in Enum.GetValues<VentPumpDirection>())
+                _pumpDirection.AddItem(Loc.GetString($"{value}"), (int) value);
+
+            _pumpDirection.SelectId((int) _data.PumpDirection!);
+            _pumpDirection.OnItemSelected += args =>
+            {
+                _pumpDirection.SelectId(args.Id);
+                _data.PumpDirection = (VentPumpDirection) args.Id;
+                PumpDataChanged?.Invoke(_address, _data);
+            };
+
+            foreach (var value in Enum.GetValues<VentPressureBound>())
+                _pressureCheck.AddItem(Loc.GetString($"{value}"), (int) value);
+
+            _pressureCheck.SelectId((int) _data.PressureChecks!);
+            _pressureCheck.OnItemSelected += args =>
+            {
+                _pressureCheck.SelectId(args.Id);
+                _data.PressureChecks = (VentPressureBound) args.Id;
+                PumpDataChanged?.Invoke(_address, _data);
+            };
+        }
+
+        public void ChangeData(GasVentPumpData data)
+        {
+            _data.Enabled = data.Enabled;
+            _enabled.Pressed = _data.Enabled!;
+
+            _data.PumpDirection = data.PumpDirection;
+            _pumpDirection.SelectId((int) _data.PumpDirection!);
+
+            _data.PressureChecks = data.PressureChecks;
+            _pressureCheck.SelectId((int) _data.PressureChecks!);
+
+            _data.ExternalPressureBound = data.ExternalPressureBound;
+            _externalBound.Value = (float) _data.ExternalPressureBound!;
+
+            _data.InternalPressureBound = data.InternalPressureBound;
+            _internalBound.Value = (float) _data.InternalPressureBound!;
+        }
+    }
+}
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml b/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml
new file mode 100644
index 0000000000..145f68de50
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml
@@ -0,0 +1,35 @@
+<BoxContainer xmlns="https://spacestation14.io"
+         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+         Orientation="Vertical" Margin="2 0 2 4">
+    <Collapsible Orientation="Vertical">
+        <CollapsibleHeading Name="CAddress" />
+        <CollapsibleBody>
+            <BoxContainer Orientation="Vertical">
+                <BoxContainer Orientation="Horizontal" Margin="0 0 0 2">
+                    <CheckBox Name="CEnableDevice" Text="{Loc 'air-alarm-ui-widget-enable'}" />
+                </BoxContainer>
+                <!-- Upper row: toggle, direction, volume rate, widenet -->
+                <BoxContainer Orientation="Horizontal" Margin="0 0 0 2" HorizontalExpand="True">
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-scrubber-pump-direction-label'}" Margin="0 0 0 1"/>
+                        <OptionButton Name="CPumpDirection" HorizontalExpand="True" />
+                    </BoxContainer>
+                    <BoxContainer Orientation="Vertical" HorizontalExpand="True">
+                        <Label Text="{Loc 'air-alarm-ui-scrubber-volume-rate-label'}" Margin="0 0 0 1" />
+                        <FloatSpinBox Name="CVolumeRate" HorizontalExpand="True" />
+                    </BoxContainer>
+                </BoxContainer>
+                <BoxContainer>
+                    <CheckBox Name="CWideNet" Text="{Loc 'air-alarm-ui-scrubber-wide-net-label'}" />
+                </BoxContainer>
+                <!-- Lower row: every single gas -->
+                <Collapsible Orientation="Vertical" Margin="2 2 2 2">
+                    <CollapsibleHeading Title="Gas filters" />
+                    <CollapsibleBody>
+                        <GridContainer HorizontalExpand="True" Name="CGasContainer" Columns="3" />
+                    </CollapsibleBody>
+                </Collapsible>
+            </BoxContainer>
+        </CollapsibleBody>
+    </Collapsible>
+</BoxContainer>
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml.cs b/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml.cs
new file mode 100644
index 0000000000..24726bbe9c
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/ScrubberControl.xaml.cs
@@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Atmos.Piping.Unary.Components;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Localization;
+
+namespace Content.Client.Atmos.Monitor.UI.Widgets
+{
+    [GenerateTypedNameReferences]
+    public partial class ScrubberControl : BoxContainer
+    {
+        private GasVentScrubberData _data;
+        private string _address;
+
+        public event Action<string, IAtmosDeviceData>? ScrubberDataChanged;
+
+        private CheckBox _enabled => CEnableDevice;
+        private CollapsibleHeading _addressLabel => CAddress;
+        private OptionButton _pumpDirection => CPumpDirection;
+        private FloatSpinBox _volumeRate => CVolumeRate;
+        private CheckBox _wideNet => CWideNet;
+
+        private GridContainer _gases => CGasContainer;
+        private Dictionary<Gas, Button> _gasControls = new();
+
+        public ScrubberControl(GasVentScrubberData data, string address)
+        {
+            RobustXamlLoader.Load(this);
+
+            this.Name = address;
+
+            _data = data;
+            _address = address;
+
+            _addressLabel.Title = Loc.GetString("air-alarm-ui-atmos-net-device-label", ("address", $"{address}"));
+
+            _enabled.Pressed = data.Enabled;
+            _enabled.OnToggled += _ =>
+            {
+                _data.Enabled = _enabled.Pressed;
+                ScrubberDataChanged?.Invoke(_address, _data);
+            };
+
+            _wideNet.Pressed = data.WideNet;
+            _wideNet.OnToggled += _ =>
+            {
+                _data.WideNet = _wideNet.Pressed;
+                ScrubberDataChanged?.Invoke(_address, _data);
+            };
+
+            _volumeRate.Value = (float) _data.VolumeRate!;
+            _volumeRate.OnValueChanged += _ =>
+            {
+                _data.VolumeRate = _volumeRate.Value;
+                ScrubberDataChanged?.Invoke(_address, _data);
+            };
+            _volumeRate.IsValid += value => value >= 0;
+
+            foreach (var value in Enum.GetValues<ScrubberPumpDirection>())
+                _pumpDirection.AddItem(Loc.GetString($"{value}"), (int) value);
+
+            _pumpDirection.SelectId((int) _data.PumpDirection!);
+            _pumpDirection.OnItemSelected += args =>
+            {
+                _pumpDirection.SelectId(args.Id);
+                _data.PumpDirection = (ScrubberPumpDirection) args.Id;
+                ScrubberDataChanged?.Invoke(_address, _data);
+            };
+
+            foreach (var value in Enum.GetValues<Gas>())
+            {
+                var gasButton = new Button
+                {
+                    Name = value.ToString(),
+                    Text = Loc.GetString($"{value}"),
+                    ToggleMode = true,
+                    HorizontalExpand = true,
+                    Pressed = _data.FilterGases!.Contains(value)
+                };
+                gasButton.OnToggled += args =>
+                {
+                    if (args.Pressed)
+                        _data.FilterGases.Add(value);
+                    else
+                        _data.FilterGases.Remove(value);
+
+                    ScrubberDataChanged?.Invoke(_address, _data);
+                };
+                _gasControls.Add(value, gasButton);
+                _gases.AddChild(gasButton);
+            }
+
+        }
+
+        public void ChangeData(GasVentScrubberData data)
+        {
+            _data.Enabled = data.Enabled;
+            _enabled.Pressed = _data.Enabled;
+
+            _data.PumpDirection = data.PumpDirection;
+            _pumpDirection.SelectId((int) _data.PumpDirection!);
+
+            _data.VolumeRate = data.VolumeRate;
+            _volumeRate.Value = (float) _data.VolumeRate!;
+
+            _data.WideNet = data.WideNet;
+            _wideNet.Pressed = _data.WideNet;
+
+            var intersect = _data.FilterGases!.Intersect(data.FilterGases!);
+
+            foreach (var value in Enum.GetValues<Gas>())
+                if (!intersect.Contains(value))
+                    _gasControls[value].Pressed = false;
+        }
+    }
+}
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml b/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml
new file mode 100644
index 0000000000..c6cdd8c987
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml
@@ -0,0 +1,18 @@
+<BoxContainer xmlns="https://spacestation14.io"
+         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+         Orientation="Vertical" Margin="0 0 0 4">
+    <Collapsible Orientation="Vertical">
+        <CollapsibleHeading Name="CName" />
+        <CollapsibleBody>
+            <BoxContainer Orientation="Vertical">
+                <BoxContainer Orientation="Horizontal">
+                    <CheckBox Name="CIgnore" Text="{Loc 'Ignore'}" />
+                </BoxContainer>
+                <!-- Upper row: Danger bounds -->
+                <BoxContainer Name="CDangerBounds" Orientation="Horizontal" Margin="0 0 0 2"/>
+                <!-- Lower row: Warning bounds -->
+                <BoxContainer Name="CWarningBounds" Orientation="Horizontal" Margin="0 0 0 2"/>
+            </BoxContainer>
+        </CollapsibleBody>
+    </Collapsible>
+</BoxContainer>
diff --git a/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml.cs b/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml.cs
new file mode 100644
index 0000000000..52d9695c84
--- /dev/null
+++ b/Content.Client/Atmos/Monitor/UI/Widgets/ThresholdControl.xaml.cs
@@ -0,0 +1,294 @@
+using System;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Client.AutoGenerated;
+using Robust.Client.UserInterface.Controls;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Client.UserInterface.XAML;
+using Robust.Shared.Localization;
+
+
+namespace Content.Client.Atmos.Monitor.UI.Widgets
+{
+    [GenerateTypedNameReferences]
+    public partial class ThresholdControl : BoxContainer
+    {
+        private AtmosAlarmThreshold _threshold;
+        private AtmosMonitorThresholdType _type;
+        private Gas? _gas;
+
+        public event Action<AtmosMonitorThresholdType, AtmosAlarmThreshold, Gas?>? ThresholdDataChanged;
+
+        private CollapsibleHeading _name => CName;
+        private CheckBox _ignore => CIgnore;
+        private BoxContainer _dangerBounds => CDangerBounds;
+        private BoxContainer _warningBounds => CWarningBounds;
+        private ThresholdBoundControl _upperBoundControl;
+        private ThresholdBoundControl _lowerBoundControl;
+        private ThresholdBoundControl _upperWarningBoundControl;
+        private ThresholdBoundControl _lowerWarningBoundControl;
+
+        // i have played myself by making threshold values nullable to
+        // indicate validity/disabled status, with several layers of side effect
+        // dependent on the other three values when you change one :HECK:
+        public ThresholdControl(string name, AtmosAlarmThreshold threshold, AtmosMonitorThresholdType type, Gas? gas = null, float modifier = 1)
+        {
+            RobustXamlLoader.Load(this);
+
+            _threshold = threshold;
+            _type = type;
+            _gas = gas;
+
+            _name.Title = name;
+
+            // i miss rust macros
+
+            _upperBoundControl = new ThresholdBoundControl("upper-bound", _threshold.UpperBound, modifier);
+            _upperBoundControl.OnBoundChanged += value =>
+            {
+                // a lot of threshold logic is baked into the properties,
+                // so setting this just returns if a change occurred or not
+                _threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Upper, value);
+                return _threshold.UpperBound;
+            };
+            _upperBoundControl.OnBoundEnabled += () =>
+            {
+                var value = 0f;
+
+                if (_threshold.LowerWarningBound != null)
+                    value = (float) _threshold.LowerWarningBound + 0.1f;
+                else if (_threshold.LowerBound != null)
+                    value = (float) _threshold.LowerBound + 0.1f;
+
+                return value;
+            };
+            _upperBoundControl.OnValidBoundChanged += () =>
+            {
+                ThresholdDataChanged!.Invoke(_type, _threshold, _gas);
+            };
+            _dangerBounds.AddChild(_upperBoundControl);
+
+            _lowerBoundControl = new ThresholdBoundControl("lower-bound", _threshold.LowerBound, modifier);
+            _lowerBoundControl.OnBoundChanged += value =>
+            {
+                _threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Lower, value);
+                return _threshold.LowerBound;
+            };
+            _lowerBoundControl.OnBoundEnabled += () =>
+            {
+                var value = 0f;
+
+                if (_threshold.UpperWarningBound != null)
+                    value = (float) _threshold.UpperWarningBound - 0.1f;
+                else if (_threshold.UpperBound != null)
+                    value = (float) _threshold.UpperBound - 0.1f;
+
+                return value;
+            };
+            _lowerBoundControl.OnValidBoundChanged += () =>
+                ThresholdDataChanged!.Invoke(_type, _threshold, _gas);
+            _dangerBounds.AddChild(_lowerBoundControl);
+
+            _upperWarningBoundControl = new ThresholdBoundControl("upper-warning-bound", _threshold.UpperWarningBound, modifier);
+            _upperWarningBoundControl.OnBoundChanged += value =>
+            {
+                _threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Upper, value);
+                return _threshold.UpperWarningBound;
+            };
+            _upperWarningBoundControl.OnBoundEnabled += () =>
+            {
+                var value = 0f;
+
+                if (_threshold.LowerWarningBound != null)
+                    value = (float) _threshold.LowerWarningBound + 0.1f;
+                else if (_threshold.LowerBound != null)
+                    value = (float) _threshold.LowerBound + 0.1f;
+
+                return value;
+            };
+            _upperWarningBoundControl.OnValidBoundChanged += () =>
+                ThresholdDataChanged!.Invoke(_type, _threshold, _gas);
+            _warningBounds.AddChild(_upperWarningBoundControl);
+
+            _lowerWarningBoundControl = new ThresholdBoundControl("lower-warning-bound", _threshold.LowerWarningBound, modifier);
+            _lowerWarningBoundControl.OnBoundChanged += value =>
+            {
+                _threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Lower, value);
+                return _threshold.LowerWarningBound;
+            };
+            _lowerWarningBoundControl.OnBoundEnabled += () =>
+            {
+                var value = 0f;
+
+                if (_threshold.UpperWarningBound != null)
+                    value = (float) _threshold.UpperWarningBound - 0.1f;
+                else if (_threshold.UpperBound != null)
+                    value = (float) _threshold.UpperBound - 0.1f;
+
+                return value;
+            };
+            _lowerWarningBoundControl.OnValidBoundChanged += () =>
+                ThresholdDataChanged!.Invoke(_type, _threshold, _gas);
+
+            _warningBounds.AddChild(_lowerWarningBoundControl);
+
+            _ignore.OnToggled += args =>
+            {
+                _threshold.Ignore = args.Pressed;
+                ThresholdDataChanged!.Invoke(_type, _threshold, _gas);
+            };
+            _ignore.Pressed = _threshold.Ignore;
+        }
+
+        public void UpdateThresholdData(AtmosAlarmThreshold threshold)
+        {
+            _upperBoundControl.SetValue(threshold.UpperBound);
+            _lowerBoundControl.SetValue(threshold.LowerBound);
+            _upperWarningBoundControl.SetValue(threshold.UpperWarningBound);
+            _lowerWarningBoundControl.SetValue(threshold.LowerWarningBound);
+            _ignore.Pressed = threshold.Ignore;
+        }
+
+
+        private class ThresholdBoundControl : BoxContainer
+        {
+            // raw values to use in thresholds, prefer these
+            // over directly setting Modified(Value/LastValue)
+            // when working with the FloatSpinBox
+            private float? _value;
+            private float _lastValue;
+
+            // convenience thing for getting multiplied values
+            // and also setting value to a usable value
+            private float? ModifiedValue
+            {
+                get => _value * _modifier;
+                set => _value = value / _modifier;
+            }
+
+            private float ModifiedLastValue
+            {
+                get => _lastValue * _modifier;
+                set => _lastValue = value / _modifier;
+            }
+
+            private float _modifier;
+
+            private FloatSpinBox _bound;
+            private CheckBox _boundEnabled;
+
+            public event Action? OnValidBoundChanged;
+            public Func<float?, float?>? OnBoundChanged;
+            public Func<float>? OnBoundEnabled;
+
+            public void SetValue(float? value)
+            {
+                _value = value;
+
+                if (_value == null)
+                {
+                    _boundEnabled.Pressed = false;
+                    _bound.Value = 0;
+                }
+                else
+                {
+                    _boundEnabled.Pressed = true;
+                    _bound.Value = (float) ModifiedValue!;
+                }
+            }
+
+            // Modifier indicates what factor the value should be multiplied by.
+            // Mostly useful to convert tiny decimals to human-readable 'percentages'
+            // (yes it's still a float, but floatspinbox unfucks that)
+            public ThresholdBoundControl(string name, float? value, float modifier = 1)
+            {
+                _modifier = modifier > 0 ? modifier : 1;
+                _value = value;
+
+                this.HorizontalExpand = true;
+                this.Orientation = LayoutOrientation.Vertical;
+
+                this.AddChild(new Label { Text = Loc.GetString($"air-alarm-ui-thresholds-{name}") });
+                _bound = new FloatSpinBox(.01f, 2);
+                this.AddChild(_bound);
+
+                _boundEnabled = new CheckBox
+                {
+                    Text = Loc.GetString("Enabled")
+                };
+                this.AddChild(_boundEnabled);
+
+                _bound.Value = ModifiedValue ?? 0;
+                _lastValue = _value ?? 0;
+                _boundEnabled.Pressed = _value != null;
+
+                _bound.OnValueChanged += ChangeValue;
+                _bound.IsValid += ValidateThreshold;
+                _boundEnabled.OnToggled += ToggleBound;
+            }
+
+            private void ChangeValue(FloatSpinBox.FloatSpinBoxEventArgs args)
+            {
+                // ensure that the value in the spinbox is transformed
+                ModifiedValue = args.Value;
+                // set the value in the scope above
+                var value = OnBoundChanged!(_value);
+                // is the value not null, or has it changed?
+                if (value != null || value != _lastValue)
+                {
+                    _value = value;
+                    _lastValue = (float) value!;
+                    OnValidBoundChanged!.Invoke();
+                }
+                // otherwise, just set it to the last known value
+                else
+                {
+                    _value = _lastValue;
+                    _bound.Value = ModifiedLastValue;
+                }
+            }
+
+            private void ToggleBound(BaseButton.ButtonToggledEventArgs args)
+            {
+                if (args.Pressed)
+                {
+                    var value = OnBoundChanged!(_lastValue);
+
+                    if (value != _lastValue)
+                    {
+                        value = OnBoundChanged!(OnBoundEnabled!());
+
+                        if (value == null || value < 0)
+                        {
+                            // TODO: Improve UX here, this is ass
+                            // basically this implies that the bound
+                            // you currently have is too aggressive
+                            // for the other set of values, so a
+                            // default value (which is +/-0.1) can't
+                            // be used
+                            _boundEnabled.Pressed = false;
+                            return;
+                        }
+                    }
+
+                    _value = value;
+
+                    _bound.Value = (float) ModifiedValue!;
+                    _lastValue = (float) _value;
+                }
+                else
+                {
+                    _value = null;
+                    _bound.Value = 0f;
+                    OnBoundChanged!(_value);
+                }
+
+                OnValidBoundChanged!.Invoke();
+            }
+
+            private bool ValidateThreshold(float value) => (_value != null) && (value >= 0);
+
+        }
+    }
+}
diff --git a/Content.Client/Entry/IgnoredComponents.cs b/Content.Client/Entry/IgnoredComponents.cs
index d0d31c32d0..df3027fd7d 100644
--- a/Content.Client/Entry/IgnoredComponents.cs
+++ b/Content.Client/Entry/IgnoredComponents.cs
@@ -317,6 +317,10 @@ namespace Content.Client.Entry
             "NukeCodePaper",
             "GhostRadio",
             "Armor",
+            "AtmosMonitor",
+            "AtmosAlarmable",
+            "FireAlarm",
+            "AirAlarm",
             "Guardian",
             "GuardianCreator",
             "GuardianHost",
diff --git a/Content.IntegrationTests/Tests/Atmos/AlarmThresholdTest.cs b/Content.IntegrationTests/Tests/Atmos/AlarmThresholdTest.cs
new file mode 100644
index 0000000000..4b3aa95a9b
--- /dev/null
+++ b/Content.IntegrationTests/Tests/Atmos/AlarmThresholdTest.cs
@@ -0,0 +1,97 @@
+using System.Threading.Tasks;
+using Content.Shared.Atmos.Monitor;
+using NUnit.Framework;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Prototypes;
+
+namespace Content.IntegrationTests.Tests.Atmos
+{
+    [TestFixture]
+    [TestOf(typeof(AtmosAlarmThreshold))]
+    public class AlarmThresholdTest : ContentIntegrationTest
+    {
+        private const string Prototypes = @"
+- type: alarmThreshold
+  id: testThreshold
+  upperBound: 5
+  lowerBound: 1
+  upperWarnAround: 0.5
+  lowerWarnAround: 1.5
+";
+
+        [Test]
+        public async Task TestAlarmThreshold()
+        {
+            var server = StartServerDummyTicker(new ServerContentIntegrationOption
+            {
+                ExtraPrototypes = Prototypes
+            });
+
+            await server.WaitIdleAsync();
+
+            var prototypeManager = server.ResolveDependency<IPrototypeManager>();
+            AtmosAlarmThreshold threshold = default!;
+
+            await server.WaitPost(() =>
+            {
+                threshold = prototypeManager.Index<AtmosAlarmThreshold>("testThreshold");
+            });
+
+            await server.WaitAssertion(() =>
+            {
+                // ensure upper/lower bounds are calculated
+                Assert.That(threshold.UpperWarningBound, Is.EqualTo(5f * 0.5f));
+                Assert.That(threshold.LowerWarningBound, Is.EqualTo(1f * 1.5f));
+
+                // ensure that setting bounds to zero/
+                // negative numbers is an invalid
+                // set
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Upper, 0);
+                Assert.That(threshold.UpperBound, Is.EqualTo(5f));
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Upper, -1);
+                Assert.That(threshold.UpperBound, Is.EqualTo(5f));
+
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Lower, 0);
+                Assert.That(threshold.LowerBound, Is.EqualTo(1f));
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Lower, -1);
+                Assert.That(threshold.LowerBound, Is.EqualTo(1f));
+
+
+                // test if making the lower bound higher
+                // than upper is invalid
+                // aka just returns the previous value
+                // instead of setting it to null
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Lower, 6f);
+                Assert.That(threshold.LowerBound, Is.EqualTo(1f));
+
+                // same as above, sets it lower
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Upper, 0.5f);
+                Assert.That(threshold.UpperBound, Is.EqualTo(5f));
+
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Upper, threshold.UpperBound + 1);
+                Assert.That(threshold.UpperWarningPercentage, Is.EqualTo(0.5f));
+
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Lower, threshold.LowerBound - 1);
+                Assert.That(threshold.LowerWarningPercentage, Is.EqualTo(1.5f));
+
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Upper, threshold.LowerBound - 1);
+                Assert.That(threshold.UpperWarningPercentage, Is.EqualTo(0.5f));
+
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Lower, threshold.UpperBound + 1);
+                Assert.That(threshold.LowerWarningPercentage, Is.EqualTo(1.5f));
+
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Upper, null);
+                threshold.TrySetWarningBound(AtmosMonitorThresholdBound.Lower, null);
+
+                Assert.That(threshold.UpperWarningBound, Is.EqualTo(null));
+                Assert.That(threshold.LowerWarningBound, Is.EqualTo(null));
+
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Upper, null);
+                threshold.TrySetPrimaryBound(AtmosMonitorThresholdBound.Lower, null);
+
+                Assert.That(threshold.UpperBound, Is.EqualTo(null));
+                Assert.That(threshold.LowerBound, Is.EqualTo(null));
+            });
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Components/AirAlarmComponent.cs b/Content.Server/Atmos/Monitor/Components/AirAlarmComponent.cs
new file mode 100644
index 0000000000..6b49a6082e
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Components/AirAlarmComponent.cs
@@ -0,0 +1,224 @@
+using System;
+using System.Threading;
+using System.Collections.Generic;
+using Content.Server.Atmos.Monitor.Systems;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.Power.Components;
+using Content.Server.VendingMachines; // TODO: Move this out of vending machines???
+using Content.Server.WireHacking;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+using Robust.Shared.Network;
+using Robust.Shared.ViewVariables;
+using static Content.Shared.Wires.SharedWiresComponent;
+using static Content.Shared.Wires.SharedWiresComponent.WiresAction;
+
+namespace Content.Server.Atmos.Monitor.Components
+{
+    [RegisterComponent]
+    public class AirAlarmComponent : Component, IWires
+    {
+        [ComponentDependency] public readonly ApcPowerReceiverComponent? DeviceRecvComponent = default!;
+        [ComponentDependency] public readonly AtmosMonitorComponent? AtmosMonitorComponent = default!;
+        [ComponentDependency] public readonly DeviceNetworkComponent? DeviceNetComponent = default!;
+        [ComponentDependency] public readonly WiresComponent? WiresComponent = null;
+
+        private AirAlarmSystem? _airAlarmSystem;
+
+        [ViewVariables] public AirAlarmMode CurrentMode { get; set; }
+
+        // Remember to null this afterwards.
+        [ViewVariables] public IAirAlarmModeUpdate? CurrentModeUpdater { get; set; }
+
+        public override string Name => "AirAlarm";
+
+        public Dictionary<string, IAtmosDeviceData> DeviceData = new();
+
+        public HashSet<NetUserId> ActivePlayers = new();
+
+        public bool FullAccess = false;
+        public bool CanSync = true;
+
+        // <-- Wires -->
+
+        private CancellationTokenSource _powerPulsedCancel = new();
+        private int PowerPulsedTimeout = 30;
+
+        private enum Wires
+        {
+            // Cutting this kills power.
+            // Pulsing it disrupts power.
+            Power,
+            // Cutting this allows full access.
+            // Pulsing this does nothing.
+            Access,
+            // Cutting/Remending this resets ONLY from panic mode.
+            // Pulsing this sets panic mode.
+            Panic,
+            // Cutting this clears sync'd devices, and makes
+            // the alarm unable to resync.
+            // Pulsing this resyncs all devices (ofc current
+            // implementation just auto-does this anyways)
+            DeviceSync,
+            // This does nothing. (placeholder for AI wire,
+            // if that ever gets implemented)
+            Dummy
+        }
+
+        public void RegisterWires(WiresComponent.WiresBuilder builder)
+        {
+            foreach (var wire in Enum.GetValues<Wires>())
+                builder.CreateWire(wire);
+
+            UpdateWires();
+        }
+
+        public void UpdateWires()
+        {
+            if (_airAlarmSystem == null)
+                _airAlarmSystem = EntitySystem.Get<AirAlarmSystem>();
+
+            if (WiresComponent == null) return;
+
+            var pwrLightState = (PowerPulsed, PowerCut) switch {
+                (true, false) => StatusLightState.BlinkingFast,
+                (_, true) => StatusLightState.Off,
+                (_, _) => StatusLightState.On
+            };
+
+            var powerLight = new StatusLightData(Color.Yellow, pwrLightState, "POWR");
+
+            var accessLight = new StatusLightData(
+                Color.Green,
+                WiresComponent.IsWireCut(Wires.Access) ? StatusLightState.Off : StatusLightState.On,
+                "ACC"
+            );
+
+            var panicLight = new StatusLightData(
+                Color.Red,
+                CurrentMode == AirAlarmMode.Panic ? StatusLightState.On : StatusLightState.Off,
+                "PAN"
+            );
+
+            var syncLightState = StatusLightState.BlinkingSlow;
+
+            if (AtmosMonitorComponent != null && !AtmosMonitorComponent.NetEnabled)
+                syncLightState = StatusLightState.Off;
+            else if (DeviceData.Count != 0)
+                syncLightState = StatusLightState.On;
+
+            var syncLight = new StatusLightData(Color.Orange, syncLightState, "NET");
+
+            WiresComponent.SetStatus(AirAlarmWireStatus.Power, powerLight);
+            WiresComponent.SetStatus(AirAlarmWireStatus.Access, accessLight);
+            WiresComponent.SetStatus(AirAlarmWireStatus.Panic, panicLight);
+            WiresComponent.SetStatus(AirAlarmWireStatus.DeviceSync, syncLight);
+        }
+
+        private bool _powerCut;
+        private bool PowerCut
+        {
+            get => _powerCut;
+            set
+            {
+                _powerCut = value;
+                SetPower();
+            }
+        }
+
+        private bool _powerPulsed;
+        private bool PowerPulsed
+        {
+            get => _powerPulsed && !_powerCut;
+            set
+            {
+                _powerPulsed = value;
+                SetPower();
+            }
+        }
+
+        private void SetPower()
+        {
+            if (DeviceRecvComponent != null
+                && WiresComponent != null)
+                DeviceRecvComponent.PowerDisabled = PowerPulsed || PowerCut;
+        }
+
+        public void WiresUpdate(WiresUpdateEventArgs args)
+        {
+            if (DeviceNetComponent == null) return;
+
+            if (_airAlarmSystem == null)
+                _airAlarmSystem = EntitySystem.Get<AirAlarmSystem>();
+
+            switch (args.Action)
+            {
+                case Pulse:
+                    switch (args.Identifier)
+                    {
+                        case Wires.Power:
+                            PowerPulsed = true;
+                            _powerPulsedCancel.Cancel();
+                            _powerPulsedCancel = new CancellationTokenSource();
+                            Owner.SpawnTimer(TimeSpan.FromSeconds(PowerPulsedTimeout),
+                                () => PowerPulsed = false,
+                                _powerPulsedCancel.Token);
+                            break;
+                        case Wires.Panic:
+                            if (CurrentMode != AirAlarmMode.Panic)
+                                _airAlarmSystem.SetMode(Owner, DeviceNetComponent.Address, AirAlarmMode.Panic, true, false);
+                            break;
+                        case Wires.DeviceSync:
+                            _airAlarmSystem.SyncAllDevices(Owner);
+                            break;
+                    }
+                    break;
+                case Mend:
+                    switch (args.Identifier)
+                    {
+                        case Wires.Power:
+                            _powerPulsedCancel.Cancel();
+                            PowerPulsed = false;
+                            PowerCut = false;
+                            break;
+                        case Wires.Panic:
+                            if (CurrentMode == AirAlarmMode.Panic)
+                                _airAlarmSystem.SetMode(Owner, DeviceNetComponent.Address, AirAlarmMode.Filtering, true, false);
+                            break;
+                        case Wires.Access:
+                            FullAccess = false;
+                            break;
+                        case Wires.DeviceSync:
+                            if (AtmosMonitorComponent != null)
+                                AtmosMonitorComponent.NetEnabled = true;
+
+                            break;
+                    }
+                    break;
+                case Cut:
+                    switch (args.Identifier)
+                    {
+                        case Wires.DeviceSync:
+                            DeviceData.Clear();
+                            if (AtmosMonitorComponent != null)
+                            {
+                                AtmosMonitorComponent.NetworkAlarmStates.Clear();
+                                AtmosMonitorComponent.NetEnabled = false;
+                            }
+
+                            break;
+                        case Wires.Power:
+                            PowerCut = true;
+                            break;
+                        case Wires.Access:
+                            FullAccess = true;
+                            break;
+                    }
+                    break;
+            }
+
+            UpdateWires();
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs b/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs
new file mode 100644
index 0000000000..b3597c9639
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs
@@ -0,0 +1,48 @@
+using System.Collections.Generic;
+using Content.Server.Power.Components;
+using Content.Shared.Atmos.Monitor;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.Atmos.Monitor.Components
+{
+    // AtmosAlarmables are entities that can be alarmed
+    // by a linked AtmosMonitor (alarmer?) if a threshold
+    // is passed in some way. The intended use is to
+    // do something in case something dangerous happens,
+    // e.g., activate firelocks in case a temperature
+    // threshold is reached
+    //
+    // It goes:
+    //
+    // AtmosMonitor -> AtmosDeviceUpdateEvent
+    // -> Threshold calculation
+    // -> AtmosMonitorAlarmEvent
+    // -> Everything linked to that monitor (targetted)
+
+    /// <summary>
+    ///     A component to add to device network devices if you want them to be alarmed
+    ///     by an atmospheric monitor.
+    /// </summary>
+    [RegisterComponent]
+    public class AtmosAlarmableComponent : Component
+    {
+        public override string Name => "AtmosAlarmable";
+
+        [ViewVariables]
+        public List<EntityUid> LinkedMonitors { get; set; } = new();
+
+        [ViewVariables] public AtmosMonitorAlarmType LastAlarmState = AtmosMonitorAlarmType.Normal;
+        [ViewVariables] public AtmosMonitorAlarmType HighestNetworkState = AtmosMonitorAlarmType.Normal;
+        [ViewVariables] public bool IgnoreAlarms { get; set; } = false;
+
+        /// <summary>
+        ///     List of prototypes that this alarmable can be
+        ///     alarmed by - must be a prototype with AtmosMonitor
+        ///     attached to it
+        /// </summary>
+        [DataField("alarmedBy")]
+        public List<string> AlarmedByPrototypes { get; } = new();
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Components/AtmosMonitorComponent.cs b/Content.Server/Atmos/Monitor/Components/AtmosMonitorComponent.cs
new file mode 100644
index 0000000000..3b7d31f32b
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Components/AtmosMonitorComponent.cs
@@ -0,0 +1,114 @@
+using System.Collections.Generic;
+using Content.Server.Atmos.Piping.Components;
+using Content.Server.Power.Components;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Sound;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.Atmos.Monitor.Components
+{
+    [RegisterComponent]
+    public class AtmosMonitorComponent : Component
+    {
+        public override string Name => "AtmosMonitor";
+
+        // Requires power. No logic related to this will be performed here, however,
+        // save for ensuring that the data is valid upon set.
+        // This is how the system discovers entities that are alarmable.
+        [ComponentDependency] public readonly ApcPowerReceiverComponent? PowerRecvComponent = default!;
+        [ComponentDependency] public readonly AtmosDeviceComponent? AtmosDeviceComponent = default!;
+
+        // Whether this monitor can send alarms,
+        // or recieve atmos command events.
+        //
+        // Useful for wires; i.e., pulsing a monitor wire
+        // will make it send an alert, and cutting
+        // it will make it so that alerts are no longer
+        // sent/receieved.
+        //
+        // Note that this cancels every single network
+        // event, including ones that may not be
+        // related to atmos monitor events.
+        [ViewVariables]
+        public bool NetEnabled = true;
+
+        // Entities that the monitor will alarm. Stores only EntityUids, is populated
+        // when this component starts up.
+        [ViewVariables]
+        public List<EntityUid> LinkedEntities = new();
+
+        [DataField("temperatureThreshold", customTypeSerializer: (typeof(PrototypeIdSerializer<AtmosAlarmThreshold>)))]
+        public readonly string? TemperatureThresholdId;
+
+        [ViewVariables]
+        public AtmosAlarmThreshold? TemperatureThreshold;
+
+        [DataField("pressureThreshold", customTypeSerializer: (typeof(PrototypeIdSerializer<AtmosAlarmThreshold>)))]
+        public readonly string? PressureThresholdId;
+
+        [ViewVariables]
+        public AtmosAlarmThreshold? PressureThreshold;
+
+        // monitor fire - much different from temperature
+        // since there's events for fire, setting this to true
+        // will make the atmos monitor act like a smoke detector,
+        // immediately signalling danger if there's a fire
+        [DataField("monitorFire")]
+        public bool MonitorFire = false;
+
+        [DataField("displayMaxAlarmInNet")]
+        public bool DisplayMaxAlarmInNet = false;
+
+        [DataField("alarmSound")]
+        public SoundSpecifier AlarmSound { get; set; } = new SoundPathSpecifier("/Audio/Machines/alarm.ogg");
+
+        [DataField("alarmVolume")]
+        public float AlarmVolume { get; set; } = -10;
+
+        // really messy but this is parsed at runtime after
+        // prototypes are initialized, there's no
+        // way without implementing a new
+        // type serializer
+        [DataField("gasThresholds")]
+        public Dictionary<Gas, string>? GasThresholdIds;
+
+        [ViewVariables]
+        public Dictionary<Gas, AtmosAlarmThreshold>? GasThresholds;
+
+        // Stores a reference to the gas on the tile this is on.
+        [ViewVariables]
+        public GasMixture? TileGas;
+
+        // Stores the last alarm state of this alarm.
+        [ViewVariables]
+        public AtmosMonitorAlarmType LastAlarmState = AtmosMonitorAlarmType.Normal;
+
+        // feeling real dirty about this one
+        // Caches the alarm states it recieves from the rest of the network.
+        // This is so that the highest alarm in the network can be calculated
+        // from any monitor without having to reping every alarm.
+        [ViewVariables]
+        public Dictionary<string, AtmosMonitorAlarmType> NetworkAlarmStates = new();
+
+        // Calculates the highest alarm in the network, including itself.
+        [ViewVariables]
+        public AtmosMonitorAlarmType HighestAlarmInNetwork
+        {
+            get
+            {
+                var state = AtmosMonitorAlarmType.Normal;
+                foreach (var (_, netState) in NetworkAlarmStates)
+                    if (state < netState)
+                        state = netState;
+
+                if (LastAlarmState > state) state = LastAlarmState;
+
+                return state;
+            }
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Components/FireAlarmComponent.cs b/Content.Server/Atmos/Monitor/Components/FireAlarmComponent.cs
new file mode 100644
index 0000000000..4f27139bfc
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Components/FireAlarmComponent.cs
@@ -0,0 +1,170 @@
+using System;
+using System.Threading;
+using Content.Server.Atmos.Monitor.Systems;
+using Content.Server.Power.Components;
+using Content.Server.VendingMachines; // TODO: Move this out of vending machines???
+using Content.Server.WireHacking;
+using Content.Shared.Interaction;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Log;
+using Robust.Shared.Maths;
+using static Content.Shared.Wires.SharedWiresComponent;
+using static Content.Shared.Wires.SharedWiresComponent.WiresAction;
+
+
+namespace Content.Server.Atmos.Monitor.Components
+{
+    [RegisterComponent]
+    public class FireAlarmComponent : Component, IWires
+    {
+        [ComponentDependency] public readonly ApcPowerReceiverComponent? DeviceRecvComponent = default!;
+        [ComponentDependency] public readonly AtmosMonitorComponent? AtmosMonitorComponent = default!;
+        [ComponentDependency] public readonly WiresComponent? WiresComponent = null;
+
+        private AtmosMonitorSystem? _atmosMonitorSystem;
+
+        public override string Name => "FireAlarm";
+
+        private CancellationTokenSource _powerPulsedCancel = new();
+        private int PowerPulsedTimeout = 30;
+
+        // Much more simpler than the air alarm wire set.
+        private enum Wires
+        {
+            // Cutting this kills power,
+            // pulsing it disrupts.
+            Power,
+            // Cutting this disables network
+            // connectivity,
+            // pulsing it sets off an alarm.
+            Alarm,
+            Dummy1,
+            Dummy2,
+        }
+
+        private bool _powerCut;
+        private bool PowerCut
+        {
+            get => _powerCut;
+            set
+            {
+                _powerCut = value;
+                SetPower();
+            }
+        }
+
+        private bool _powerPulsed;
+        private bool PowerPulsed
+        {
+            get => _powerPulsed && !_powerCut;
+            set
+            {
+                _powerPulsed = value;
+                SetPower();
+            }
+        }
+
+        private void SetPower()
+        {
+            if (DeviceRecvComponent != null
+                && WiresComponent != null)
+                DeviceRecvComponent.PowerDisabled = PowerPulsed || PowerCut;
+        }
+
+
+        public void RegisterWires(WiresComponent.WiresBuilder builder)
+        {
+            builder.CreateWire(Wires.Power);
+            builder.CreateWire(Wires.Alarm);
+            builder.CreateWire(Wires.Dummy1);
+            builder.CreateWire(Wires.Dummy2);
+
+            UpdateWires();
+        }
+
+        public void UpdateWires()
+        {
+            if (WiresComponent == null) return;
+
+            var powerLight = new StatusLightData(Color.Yellow, StatusLightState.On, "POWR");
+
+            if (PowerPulsed)
+                powerLight = new StatusLightData(Color.Yellow, StatusLightState.BlinkingFast, "POWR");
+            else if (PowerCut)
+                powerLight = new StatusLightData(Color.Yellow, StatusLightState.Off, "POWR");
+
+            var syncLight = new StatusLightData(Color.Orange, StatusLightState.On, "NET");
+
+            if (AtmosMonitorComponent != null)
+                if (!AtmosMonitorComponent.NetEnabled)
+                    syncLight = new StatusLightData(Color.Orange, StatusLightState.Off, "NET");
+                else if (AtmosMonitorComponent.HighestAlarmInNetwork == AtmosMonitorAlarmType.Danger)
+                    syncLight = new StatusLightData(Color.Orange, StatusLightState.BlinkingFast, "NET");
+
+            WiresComponent.SetStatus(FireAlarmWireStatus.Power, powerLight);
+            WiresComponent.SetStatus(FireAlarmWireStatus.Alarm, syncLight);
+        }
+
+        public void WiresUpdate(WiresUpdateEventArgs args)
+        {
+            if (_atmosMonitorSystem == null)
+                _atmosMonitorSystem = EntitySystem.Get<AtmosMonitorSystem>();
+
+            switch (args.Action)
+            {
+                case Pulse:
+                    switch (args.Identifier)
+                    {
+                        case Wires.Power:
+                            PowerPulsed = true;
+                            _powerPulsedCancel.Cancel();
+                            _powerPulsedCancel = new CancellationTokenSource();
+                            Owner.SpawnTimer(TimeSpan.FromSeconds(PowerPulsedTimeout),
+                                () => PowerPulsed = false,
+                                _powerPulsedCancel.Token);
+                            break;
+                        case Wires.Alarm:
+                            if (AtmosMonitorComponent != null)
+                                _atmosMonitorSystem.Alert(Owner, AtmosMonitorAlarmType.Danger);
+                            break;
+                    }
+
+                    break;
+                case Mend:
+                    switch (args.Identifier)
+                    {
+                        case Wires.Power:
+                            _powerPulsedCancel.Cancel();
+                            PowerPulsed = false;
+                            PowerCut = false;
+                            break;
+                        case Wires.Alarm:
+                            if (AtmosMonitorComponent != null)
+                                AtmosMonitorComponent.NetEnabled = true;
+                            break;
+                    }
+
+                    break;
+                case Cut:
+                    switch (args.Identifier)
+                    {
+                        case Wires.Power:
+                            PowerCut = true;
+                            break;
+                        case Wires.Alarm:
+                            if (AtmosMonitorComponent != null)
+                                AtmosMonitorComponent.NetEnabled = false;
+                            break;
+
+                    }
+                    break;
+
+            }
+
+            UpdateWires();
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Systems/AirAlarmModes.cs b/Content.Server/Atmos/Monitor/Systems/AirAlarmModes.cs
new file mode 100644
index 0000000000..deaa08760e
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Systems/AirAlarmModes.cs
@@ -0,0 +1,242 @@
+using System;
+using System.Collections.Generic;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.Monitor.Systems;
+using Content.Server.Atmos.Piping.Unary.Components;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Atmos.Piping.Unary.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Atmos.Monitor
+{
+    /// <summary>
+    ///     This is an interface that air alarm modes use
+    ///     in order to execute the defined modes.
+    /// </summary>
+    public interface IAirAlarmMode
+    {
+        // This is executed the moment the mode
+        // is set. This is to ensure that 'dumb'
+        // modes such as Filter/Panic are immediately
+        // set.
+        /// <summary>
+        ///     Executed the mode is set on an air alarm.
+        ///     This is to ensure that modes like Filter/Panic
+        ///     are immediately set.
+        /// </summary>
+        public void Execute(EntityUid uid);
+    }
+
+    // IAirAlarmModeUpdate
+    //
+    // This is an interface that AirAlarmSystem uses
+    // in order to 'update' air alarm modes so that
+    // modes like Replace can be implemented.
+    /// <summary>
+    ///     An interface that AirAlarmSystem uses
+    ///     in order to update air alarm modes that
+    ///     need updating (e.g., Replace)
+    /// </summary>
+    public interface IAirAlarmModeUpdate
+    {
+        /// <summary>
+        ///     This is checked by AirAlarmSystem when
+        ///     a mode is updated. This should be set
+        ///     to a DeviceNetwork address, or some
+        ///     unique identifier that ID's the
+        ///     owner of the mode's executor.
+        /// </summary>
+        public string NetOwner { get; set; }
+        /// <summary>
+        ///     This is executed every time the air alarm
+        ///     update loop is fully executed. This should
+        ///     be where all the logic goes.
+        /// </summary>
+        public void Update(EntityUid uid);
+    }
+
+    public class AirAlarmModeFactory
+    {
+        private static IAirAlarmMode _filterMode = new AirAlarmFilterMode();
+        private static IAirAlarmMode _fillMode = new AirAlarmFillMode();
+        private static IAirAlarmMode _panicMode = new AirAlarmPanicMode();
+        private static IAirAlarmMode _noneMode = new AirAlarmNoneMode();
+
+        // still not a fan since ReplaceMode must have an allocation
+        // but it's whatever
+        public static IAirAlarmMode? ModeToExecutor(AirAlarmMode mode) => mode switch 
+        {
+            AirAlarmMode.Filtering => _filterMode,
+            AirAlarmMode.Fill => _fillMode,
+            AirAlarmMode.Panic => _panicMode,
+            AirAlarmMode.None => _noneMode,
+            AirAlarmMode.Replace => new AirAlarmReplaceMode(),
+            _ => null
+        };
+    }
+
+    // like a tiny little EntitySystem
+    public abstract class AirAlarmModeExecutor : IAirAlarmMode
+    {
+        [Dependency] public readonly IEntityManager EntityManager = default!;
+        public readonly DeviceNetworkSystem DeviceNetworkSystem;
+        public readonly AirAlarmSystem AirAlarmSystem;
+
+        public abstract void Execute(EntityUid uid);
+
+        public AirAlarmModeExecutor()
+        {
+            IoCManager.InjectDependencies(this);
+
+            DeviceNetworkSystem = EntitySystem.Get<DeviceNetworkSystem>();
+            AirAlarmSystem = EntitySystem.Get<AirAlarmSystem>();
+        }
+    }
+
+    public class AirAlarmNoneMode : AirAlarmModeExecutor
+    {
+        public override void Execute(EntityUid uid)
+        {
+            if (!EntityManager.TryGetComponent(uid, out AirAlarmComponent alarm))
+                return;
+
+            foreach (var (addr, device) in alarm.DeviceData)
+            {
+                device.Enabled = false;
+                AirAlarmSystem.SetData(uid, addr, device);
+            }
+        }
+    }
+
+    public class AirAlarmFilterMode : AirAlarmModeExecutor
+    {
+        public override void Execute(EntityUid uid)
+        {
+            if (!EntityManager.TryGetComponent(uid, out AirAlarmComponent alarm))
+                return;
+
+            foreach (var (addr, device) in alarm.DeviceData)
+            {
+                switch (device)
+                {
+                    case GasVentPumpData pumpData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentPumpData.FilterModePreset);
+                        break;
+                    case GasVentScrubberData scrubberData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentScrubberData.FilterModePreset);
+                        break;
+                }
+            }
+        }
+    }
+
+    public class AirAlarmPanicMode : AirAlarmModeExecutor
+    {
+        public override void Execute(EntityUid uid)
+        {
+            if (!EntityManager.TryGetComponent(uid, out AirAlarmComponent alarm))
+                return;
+
+            foreach (var (addr, device) in alarm.DeviceData)
+            {
+                switch (device)
+                {
+                    case GasVentPumpData pumpData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentPumpData.PanicModePreset);
+                        break;
+                    case GasVentScrubberData scrubberData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentScrubberData.PanicModePreset);
+                        break;
+                }
+            }
+        }
+    }
+
+    public class AirAlarmFillMode : AirAlarmModeExecutor
+    {
+        public override void Execute(EntityUid uid)
+        {
+            if (!EntityManager.TryGetComponent(uid, out AirAlarmComponent alarm))
+                return;
+
+            foreach (var (addr, device) in alarm.DeviceData)
+            {
+                switch (device)
+                {
+                    case GasVentPumpData pumpData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentPumpData.FillModePreset);
+                        break;
+                    case GasVentScrubberData scrubberData:
+                        AirAlarmSystem.SetData(uid, addr, GasVentScrubberData.FillModePreset);
+                        break;
+                }
+            }
+        }
+    }
+
+    public class AirAlarmReplaceMode : AirAlarmModeExecutor, IAirAlarmModeUpdate
+    {
+        private Dictionary<string, IAtmosDeviceData> _devices = new();
+        private float _lastPressure = Atmospherics.OneAtmosphere;
+        private AtmosMonitorComponent? _monitor;
+        private AtmosAlarmableComponent? _alarmable;
+
+        public string NetOwner { get; set; } = string.Empty;
+
+        public override void Execute(EntityUid uid)
+        {
+            if (!EntityManager.TryGetComponent(uid, out AirAlarmComponent alarm)
+                || !EntityManager.TryGetComponent(uid, out AtmosMonitorComponent monitor)
+                || !EntityManager.TryGetComponent(uid, out AtmosAlarmableComponent alarmable))
+                return;
+
+            _devices = alarm.DeviceData;
+            _monitor = monitor;
+            _alarmable = alarmable;
+            _alarmable.IgnoreAlarms = true;
+            SetSiphon(uid);
+        }
+
+        public void Update(EntityUid uid)
+        {
+            if (_monitor == null
+                || _alarmable == null
+                || _monitor.TileGas == null)
+                return;
+
+            // just a little pointer
+            var mixture = _monitor.TileGas;
+
+            _lastPressure = mixture.Pressure;
+            if (_lastPressure <= 0.2f) // anything below and it might get stuck
+            {
+                _alarmable.IgnoreAlarms = false;
+                AirAlarmSystem.SetMode(uid, NetOwner!, AirAlarmMode.Filtering, false, false);
+            }
+        }
+
+        private void SetSiphon(EntityUid uid)
+        {
+            foreach (var (addr, device) in _devices)
+            {
+                switch (device)
+                {
+                    case GasVentPumpData pumpData:
+                        pumpData = GasVentPumpData.PanicModePreset;
+                        pumpData.IgnoreAlarms = true;
+                        AirAlarmSystem.SetData(uid, addr, pumpData);
+                        break;
+                    case GasVentScrubberData scrubberData:
+                        scrubberData = GasVentScrubberData.PanicModePreset;
+                        scrubberData.IgnoreAlarms = true;
+                        AirAlarmSystem.SetData(uid, addr, scrubberData);
+                        break;
+                }
+            }
+        }
+
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Systems/AirAlarmSystem.cs b/Content.Server/Atmos/Monitor/Systems/AirAlarmSystem.cs
new file mode 100644
index 0000000000..73010e26d7
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Systems/AirAlarmSystem.cs
@@ -0,0 +1,541 @@
+using System;
+using System.Collections.Generic;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.Piping.Components;
+using Content.Server.DeviceNetwork;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Server.Popups;
+using Content.Server.Power.Components;
+using Content.Server.WireHacking;
+using Content.Shared.Access.Components;
+using Content.Shared.Access.Systems;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Interaction;
+using Content.Shared.Popups;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Player;
+
+namespace Content.Server.Atmos.Monitor.Systems
+{
+    // AirAlarm system - specific for atmos devices, rather than
+    // atmos monitors.
+    //
+    // oh boy, message passing!
+    //
+    // Commands should always be sent into packet's Command
+    // data key. In response, a packet will be transmitted
+    // with the response type as its command, and the
+    // response data in its data key.
+    public class AirAlarmSystem : EntitySystem
+    {
+        [Dependency] private readonly DeviceNetworkSystem _deviceNet = default!;
+        [Dependency] private readonly AtmosMonitorSystem _atmosMonitorSystem = default!;
+        [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
+        [Dependency] private readonly AccessReaderSystem _accessSystem = default!;
+        [Dependency] private readonly PopupSystem _popup = default!;
+        [Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
+
+        #region Device Network API
+
+        public const int Freq = AtmosMonitorSystem.AtmosMonitorApcFreq;
+
+        /// <summary>
+        ///     Command to set device data within the air alarm's network.
+        /// </summary>
+        public const string AirAlarmSetData = "air_alarm_set_device_data";
+
+        /// <summary>
+        ///     Command to request a sync from devices in an air alarm's network.
+        /// </summary>
+        public const string AirAlarmSyncCmd = "air_alarm_sync_devices";
+
+        /// <summary>
+        ///     Command to set an air alarm's mode.
+        /// </summary>
+        public const string AirAlarmSetMode = "air_alarm_set_mode";
+
+        // -- Packet Data --
+
+        /// <summary>
+        ///     Data response to an AirAlarmSetData command.
+        /// </summary>
+        public const string AirAlarmSetDataStatus = "air_alarm_set_device_data_status";
+
+        /// <summary>
+        ///     Data response to an AirAlarmSync command. Contains
+        ///     IAtmosDeviceData in this system's implementation.
+        /// </summary>
+        public const string AirAlarmSyncData = "air_alarm_device_sync_data";
+
+        // -- API --
+
+        /// <summary>
+        ///     Set the data for an air alarm managed device.
+        /// </summary>
+        /// <param name="address">The address of the device.</param>
+        /// <param name="data">The data to send to the device.</param>
+        public void SetData(EntityUid uid, string address, IAtmosDeviceData data)
+        {
+            if (EntityManager.TryGetComponent(uid, out AtmosMonitorComponent monitor)
+                && !monitor.NetEnabled)
+                return;
+
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AirAlarmSetData,
+                // [AirAlarmTypeData] = type,
+                [AirAlarmSetData] = data
+            };
+
+            _deviceNet.QueuePacket(uid, address, Freq, payload);
+        }
+
+        /// <summary>
+        ///     Broadcast a sync packet to an air alarm's local network.
+        /// </summary>
+        public void SyncAllDevices(EntityUid uid)
+        {
+            if (EntityManager.TryGetComponent(uid, out AtmosMonitorComponent monitor)
+                && !monitor.NetEnabled)
+                return;
+
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AirAlarmSyncCmd
+            };
+
+            _deviceNet.QueuePacket(uid, string.Empty, Freq, payload, true);
+        }
+
+        /// <summary>
+        ///     Send a sync packet to a specific device from an air alarm.
+        /// </summary>
+        /// <param name="address">The address of the device.</param>
+        public void SyncDevice(EntityUid uid, string address)
+        {
+            if (EntityManager.TryGetComponent(uid, out AtmosMonitorComponent monitor)
+                && !monitor.NetEnabled)
+                return;
+
+
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AirAlarmSyncCmd
+            };
+
+            _deviceNet.QueuePacket(uid, address, Freq, payload);
+        }
+
+        /// <summary>
+        ///     Sync this air alarm's mode with the rest of the network.
+        /// </summary>
+        /// <param name="mode">The mode to sync with the rest of the network.</param>
+        public void SyncMode(EntityUid uid, AirAlarmMode mode)
+        {
+            if (EntityManager.TryGetComponent(uid, out AtmosMonitorComponent monitor)
+                && !monitor.NetEnabled)
+                return;
+
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AirAlarmSetMode,
+                [AirAlarmSetMode] = mode
+            };
+
+            _deviceNet.QueuePacket(uid, string.Empty, Freq, payload, true);
+        }
+
+        #endregion
+
+        #region Events
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<AirAlarmComponent, PacketSentEvent>(OnPacketRecv);
+            SubscribeLocalEvent<AirAlarmComponent, AtmosDeviceUpdateEvent>(OnAtmosUpdate);
+            SubscribeLocalEvent<AirAlarmComponent, AtmosMonitorAlarmEvent>(OnAtmosAlarm);
+            SubscribeLocalEvent<AirAlarmComponent, PowerChangedEvent>(OnPowerChanged);
+            SubscribeLocalEvent<AirAlarmComponent, AirAlarmResyncAllDevicesMessage>(OnResyncAll);
+            SubscribeLocalEvent<AirAlarmComponent, AirAlarmUpdateAlarmModeMessage>(OnUpdateAlarmMode);
+            SubscribeLocalEvent<AirAlarmComponent, AirAlarmUpdateAlarmThresholdMessage>(OnUpdateThreshold);
+            SubscribeLocalEvent<AirAlarmComponent, AirAlarmUpdateDeviceDataMessage>(OnUpdateDeviceData);
+            SubscribeLocalEvent<AirAlarmComponent, BoundUIClosedEvent>(OnClose);
+            SubscribeLocalEvent<AirAlarmComponent, InteractHandEvent>(OnInteract);
+        }
+
+        private void OnPowerChanged(EntityUid uid, AirAlarmComponent component, PowerChangedEvent args)
+        {
+            if (!args.Powered)
+            {
+                ForceCloseAllInterfaces(uid);
+                component.CurrentModeUpdater = null;
+                component.DeviceData.Clear();
+            }
+        }
+
+        private void OnClose(EntityUid uid, AirAlarmComponent component, BoundUIClosedEvent args)
+        {
+            component.ActivePlayers.Remove(args.Session.UserId);
+            if (component.ActivePlayers.Count == 0)
+                RemoveActiveInterface(uid);
+        }
+
+        private void OnInteract(EntityUid uid, AirAlarmComponent component, InteractHandEvent args)
+        {
+            if (!_interactionSystem.InRangeUnobstructed(args.User, args.Target))
+                return;
+
+            if (!EntityManager.TryGetComponent(args.User, out ActorComponent? actor))
+                return;
+
+            if (EntityManager.TryGetComponent(uid, out WiresComponent wire) && wire.IsPanelOpen)
+            {
+                args.Handled = false;
+                return;
+            }
+
+            if (EntityManager.TryGetComponent(uid, out ApcPowerReceiverComponent recv) && !recv.Powered)
+                return;
+
+            _uiSystem.GetUiOrNull(component.Owner, SharedAirAlarmInterfaceKey.Key)?.Open(actor.PlayerSession);
+            component.ActivePlayers.Add(actor.PlayerSession.UserId);
+            AddActiveInterface(uid);
+            SendAddress(uid);
+            SendAlarmMode(uid);
+            SendThresholds(uid);
+            SyncAllDevices(uid);
+            SendAirData(uid);
+        }
+
+        private void OnResyncAll(EntityUid uid, AirAlarmComponent component, AirAlarmResyncAllDevicesMessage args)
+        {
+            if (AccessCheck(uid, args.Session.AttachedEntity, component))
+            {
+                component.DeviceData.Clear();
+                SyncAllDevices(uid);
+            }
+        }
+
+        private void OnUpdateAlarmMode(EntityUid uid, AirAlarmComponent component, AirAlarmUpdateAlarmModeMessage args)
+        {
+            string addr = string.Empty;
+            if (EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn)) addr = netConn.Address;
+            if (AccessCheck(uid, args.Session.AttachedEntity, component))
+                SetMode(uid, addr, args.Mode, true, false);
+            else
+                SendAlarmMode(uid);
+        }
+
+        private void OnUpdateThreshold(EntityUid uid, AirAlarmComponent component, AirAlarmUpdateAlarmThresholdMessage args)
+        {
+            if (AccessCheck(uid, args.Session.AttachedEntity, component))
+                SetThreshold(uid, args.Threshold, args.Type, args.Gas);
+            else
+                SendThresholds(uid);
+        }
+
+        private void OnUpdateDeviceData(EntityUid uid, AirAlarmComponent component, AirAlarmUpdateDeviceDataMessage args)
+        {
+            if (AccessCheck(uid, args.Session.AttachedEntity, component))
+                SetDeviceData(uid, args.Address, args.Data);
+            else
+                SyncDevice(uid, args.Address);
+        }
+
+        private bool AccessCheck(EntityUid uid, EntityUid? user, AirAlarmComponent? component = null)
+        {
+            if (!Resolve(uid, ref component))
+                return false;
+
+            if (!EntityManager.TryGetComponent(uid, out AccessReaderComponent reader) || user == null)
+                return false;
+
+            if (!_accessSystem.IsAllowed(reader, user.Value) && !component.FullAccess)
+            {
+                _popup.PopupEntity(Loc.GetString("air-alarm-ui-access-denied"), user.Value, Filter.Entities(user.Value));
+                return false;
+            }
+
+            return true;
+        }
+
+        private void OnAtmosAlarm(EntityUid uid, AirAlarmComponent component, AtmosMonitorAlarmEvent args)
+        {
+            if (component.ActivePlayers.Count != 0)
+            {
+                SyncAllDevices(uid);
+                SendAirData(uid);
+            }
+
+            string addr = string.Empty;
+            if (EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn)) addr = netConn.Address;
+
+
+            if (args.HighestNetworkType == AtmosMonitorAlarmType.Danger)
+            {
+                SetMode(uid, addr, AirAlarmMode.None, true);
+                // set mode to off to mimic the vents/scrubbers being turned off
+                // update UI
+                //
+                // no, the mode isn't processed here - it's literally just
+                // set to what mimics 'off'
+            }
+            else if (args.HighestNetworkType == AtmosMonitorAlarmType.Normal)
+            {
+                // if the mode is still set to off, set it to filtering instead
+                // alternatively, set it to the last saved mode
+                //
+                // no, this still doesn't execute the mode
+                SetMode(uid, addr, AirAlarmMode.Filtering, true);
+            }
+        }
+
+        #endregion
+
+        #region Air Alarm Settings
+
+        /// <summary>
+        ///     Set a threshold on an air alarm.
+        /// </summary>
+        /// <param name="threshold">New threshold data.</param>
+        public void SetThreshold(EntityUid uid, AtmosAlarmThreshold threshold, AtmosMonitorThresholdType type, Gas? gas = null, AirAlarmComponent? controller = null)
+        {
+            if (!Resolve(uid, ref controller)) return;
+
+            _atmosMonitorSystem.SetThreshold(uid, type, threshold, gas);
+
+            _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmThresholdMessage(type, threshold, gas));
+        }
+
+        /// <summary>
+        ///     Set an air alarm's mode.
+        /// </summary>
+        /// <param name="origin">The origin address of this mode set. Used for network sync.</param>
+        /// <param name="mode">The mode to set the alarm to.</param>
+        /// <param name="sync">Whether to sync this mode change to the network or not. Defaults to false.</param>
+        /// <param name="uiOnly">Whether this change is for the UI only, or if it changes the air alarm's operating mode. Defaults to true.</param>
+        public void SetMode(EntityUid uid, string origin, AirAlarmMode mode, bool sync = false, bool uiOnly = true, AirAlarmComponent? controller = null)
+        {
+            if (!Resolve(uid, ref controller)) return;
+            controller.CurrentMode = mode;
+
+            // setting it to UI only maans we don't have
+            // to deal with the issue of not-single-owner
+            // alarm mode executors
+            if (!uiOnly)
+            {
+                var newMode = AirAlarmModeFactory.ModeToExecutor(mode);
+                if (newMode != null)
+                {
+                    newMode.Execute(uid);
+                    if (newMode is IAirAlarmModeUpdate updatedMode)
+                    {
+                        controller.CurrentModeUpdater = updatedMode;
+                        controller.CurrentModeUpdater.NetOwner = origin;
+                    }
+                    else if (controller.CurrentModeUpdater != null)
+                        controller.CurrentModeUpdater = null;
+                }
+            }
+            // only one air alarm in a network can use an air alarm mode
+            // that updates, so even if it's a ui-only change,
+            // we have to invalidte the last mode's updater and
+            // remove it because otherwise it'll execute a now
+            // invalid mode
+            else if (controller.CurrentModeUpdater != null
+                     && controller.CurrentModeUpdater.NetOwner != origin)
+                controller.CurrentModeUpdater = null;
+
+            // controller.SendMessage(new AirAlarmUpdateAlarmModeMessage(mode));
+            _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmModeMessage(mode));
+
+
+            // setting sync deals with the issue of air alarms
+            // in the same network needing to have the same mode
+            // as other alarms
+            if (sync) SyncMode(uid, mode);
+        }
+
+        /// <summary>
+        ///     Sets device data. Practically a wrapper around the packet sending function, SetData.
+        /// </summary>
+        /// <param name="address">The address to send the new data to.</param>
+        /// <param name="devData">The device data to be sent.</param>
+        public void SetDeviceData(EntityUid uid, string address, IAtmosDeviceData devData, AirAlarmComponent? controller = null)
+        {
+            if (!Resolve(uid, ref controller)) return;
+
+            devData.Dirty = true;
+            SetData(uid, address, devData);
+        }
+
+        private void OnPacketRecv(EntityUid uid, AirAlarmComponent controller, PacketSentEvent args)
+        {
+            if (!args.Data.TryGetValue(DeviceNetworkConstants.Command, out string? cmd))
+                return;
+
+            switch (cmd)
+            {
+                case AirAlarmSyncData:
+                    if (!args.Data.TryGetValue(AirAlarmSyncData, out IAtmosDeviceData? data)
+                        || data == null
+                        || !controller.CanSync) break;
+
+                    // Save into component.
+                    // Sync data to interface.
+                    // _airAlarmDataSystem.UpdateDeviceData(uid, args.SenderAddress, data);
+                    //
+                    _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateDeviceDataMessage(args.SenderAddress, data));
+                    if (controller.WiresComponent != null) controller.UpdateWires();
+                    if (!controller.DeviceData.TryAdd(args.SenderAddress, data))
+                        controller.DeviceData[args.SenderAddress] = data;
+
+                    return;
+                case AirAlarmSetDataStatus:
+                    if (!args.Data.TryGetValue(AirAlarmSetDataStatus, out bool dataStatus)) break;
+
+                    // Sync data to interface.
+                    // This should say if the result
+                    // failed, or succeeded. Don't save it.l
+                    SyncDevice(uid, args.SenderAddress);
+
+                    return;
+                case AirAlarmSetMode:
+                    if (!args.Data.TryGetValue(AirAlarmSetMode, out AirAlarmMode alarmMode)) break;
+
+                    SetMode(uid, args.SenderAddress, alarmMode);
+
+                    return;
+            }
+        }
+
+        #endregion
+
+        #region UI
+
+        // List of active user interfaces.
+        private HashSet<EntityUid> _activeUserInterfaces = new();
+
+        /// <summary>
+        ///     Adds an active interface to be updated.
+        /// </summary>
+        public void AddActiveInterface(EntityUid uid) =>
+            _activeUserInterfaces.Add(uid);
+
+        /// <summary>
+        ///     Removes an active interface from the system update loop.
+        /// </summary>
+        public void RemoveActiveInterface(EntityUid uid) =>
+            _activeUserInterfaces.Remove(uid);
+
+        /// <summary>
+        ///     Force closes all interfaces currently open related to this air alarm.
+        /// </summary>
+        public void ForceCloseAllInterfaces(EntityUid uid) =>
+            _uiSystem.TryCloseAll(uid, SharedAirAlarmInterfaceKey.Key);
+
+        private void SendAddress(EntityUid uid, DeviceNetworkComponent? netConn = null)
+        {
+            if (!Resolve(uid, ref netConn)) return;
+
+            _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmSetAddressMessage(netConn.Address));
+        }
+
+        /// <summary>
+        ///     Update an interface's air data. This is all the 'hot' data
+        ///     that an air alarm contains server-side. Updated with a whopping 8
+        ///     delay automatically once a UI is in the loop.
+        /// </summary>
+        public void SendAirData(EntityUid uid, AirAlarmComponent? alarm = null, AtmosMonitorComponent? monitor = null, ApcPowerReceiverComponent? power = null)
+        {
+            if (!Resolve(uid, ref alarm, ref monitor, ref power)) return;
+
+            if (!power.Powered) return;
+
+
+            if (monitor.TileGas != null)
+            {
+                var gases = new Dictionary<Gas, float>();
+
+                foreach (var gas in Enum.GetValues<Gas>())
+                    gases.Add(gas, monitor.TileGas.GetMoles(gas));
+
+                var airData = new AirAlarmAirData(monitor.TileGas.Pressure, monitor.TileGas.Temperature, monitor.TileGas.TotalMoles, monitor.LastAlarmState, gases);
+
+                _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAirDataMessage(airData));
+            }
+        }
+
+        /// <summary>
+        ///     Send an air alarm mode to any open interface related to an air alarm.
+        /// </summary>
+        public void SendAlarmMode(EntityUid uid, AtmosMonitorComponent? monitor = null, ApcPowerReceiverComponent? power = null, AirAlarmComponent? controller = null)
+        {
+            if (!Resolve(uid, ref monitor, ref power, ref controller)
+                || !power.Powered) return;
+
+            _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmModeMessage(controller.CurrentMode));
+        }
+
+        /// <summary>
+        ///     Send all thresholds to any open interface related to a given air alarm.
+        /// </summary>
+        public void SendThresholds(EntityUid uid, AtmosMonitorComponent? monitor = null, ApcPowerReceiverComponent? power = null, AirAlarmComponent? controller = null)
+        {
+            if (!Resolve(uid, ref monitor, ref power, ref controller)
+                || !power.Powered) return;
+
+            if (monitor.PressureThreshold == null
+                && monitor.TemperatureThreshold == null
+                && monitor.GasThresholds == null)
+                return;
+
+            if (monitor.PressureThreshold != null)
+            {
+                _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmThresholdMessage(AtmosMonitorThresholdType.Pressure, monitor.PressureThreshold));
+            }
+
+            if (monitor.TemperatureThreshold != null)
+            {
+                _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmThresholdMessage(AtmosMonitorThresholdType.Temperature, monitor.TemperatureThreshold));
+            }
+
+            if (monitor.GasThresholds != null)
+            {
+                foreach (var (gas, threshold) in monitor.GasThresholds)
+                    _uiSystem.TrySendUiMessage(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUpdateAlarmThresholdMessage(AtmosMonitorThresholdType.Gas, threshold, gas));
+            }
+        }
+
+        public void OnAtmosUpdate(EntityUid uid, AirAlarmComponent alarm, AtmosDeviceUpdateEvent args)
+        {
+            if (alarm.CurrentModeUpdater != null)
+                alarm.CurrentModeUpdater.Update(uid);
+        }
+
+        private const float _delay = 8f;
+        private float _timer = 0f;
+
+        public override void Update(float frameTime)
+        {
+            _timer += frameTime;
+            if (_timer >= _delay)
+            {
+                _timer = 0f;
+                foreach (var uid in _activeUserInterfaces)
+                {
+                    SendAirData(uid);
+                    _uiSystem.TrySetUiState(uid, SharedAirAlarmInterfaceKey.Key, new AirAlarmUIState());
+                }
+            }
+        }
+
+        #endregion
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs b/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
new file mode 100644
index 0000000000..0a9341d414
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
@@ -0,0 +1,43 @@
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.DeviceNetwork;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Shared.Atmos.Monitor;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.Atmos.Monitor.Systems
+{
+    public class AtmosAlarmableSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<AtmosAlarmableComponent, PacketSentEvent>(OnPacketRecv);
+        }
+
+        private void OnPacketRecv(EntityUid uid, AtmosAlarmableComponent component, PacketSentEvent args)
+        {
+            if (component.IgnoreAlarms) return;
+
+            if (!EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn))
+                return;
+
+            if (args.Data.TryGetValue(DeviceNetworkConstants.Command, out string? cmd)
+                && cmd == AtmosMonitorSystem.AtmosMonitorAlarmCmd)
+            {
+                // does it have a state & network max state?
+                // does it have a source?
+                // and can this be alarmed by the source?
+                // if so, raise an alarm
+                if (args.Data.TryGetValue(DeviceNetworkConstants.CmdSetState, out AtmosMonitorAlarmType state)
+                    && args.Data.TryGetValue(AtmosMonitorSystem.AtmosMonitorAlarmNetMax, out AtmosMonitorAlarmType netMax)
+                    && args.Data.TryGetValue(AtmosMonitorSystem.AtmosMonitorAlarmSrc, out string? source)
+                    && component.AlarmedByPrototypes.Contains(source))
+                {
+                    component.LastAlarmState = state;
+                    component.HighestNetworkState = netMax;
+                    RaiseLocalEvent(component.Owner, new AtmosMonitorAlarmEvent(state, netMax));
+                }
+            }
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Systems/AtmosMonitoringSystem.cs b/Content.Server/Atmos/Monitor/Systems/AtmosMonitoringSystem.cs
new file mode 100644
index 0000000000..1b846fda43
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Systems/AtmosMonitoringSystem.cs
@@ -0,0 +1,488 @@
+using System.Collections.Generic;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.EntitySystems;
+using Content.Server.Atmos.Piping.EntitySystems;
+using Content.Server.Atmos.Piping.Components;
+using Content.Server.DeviceNetwork;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.DeviceNetwork.Systems;
+using Content.Server.Power.Components;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.IoC;
+using Robust.Shared.Maths;
+using Robust.Shared.Player;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Atmos.Monitor.Systems
+{
+    // AtmosMonitorSystem. Grabs all the AtmosAlarmables connected
+    // to it via local APC net, and starts sending updates of the
+    // current atmosphere. Monitors fire (which always triggers as
+    // a danger), and atmos (which triggers based on set thresholds).
+    public class AtmosMonitorSystem : EntitySystem
+    {
+        [Dependency] private readonly AtmosphereSystem _atmosphereSystem = default!;
+        [Dependency] private readonly AtmosDeviceSystem _atmosDeviceSystem = default!;
+        [Dependency] private readonly DeviceNetworkSystem _deviceNetSystem = default!;
+        [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+
+        // Commands
+        /// <summary>
+        ///     Command to alarm the network that something has happened.
+        /// </summary>
+        public const string AtmosMonitorAlarmCmd = "atmos_monitor_alarm_update";
+
+        /// <summary>
+        ///     Command to sync this monitor's alarm state with the rest of the network.
+        /// </summary>
+        public const string AtmosMonitorAlarmSyncCmd = "atmos_monitor_alarm_sync";
+
+        /// <summary>
+        ///     Command to reset all alarms on a network.
+        /// </summary>
+        public const string AtmosMonitorAlarmResetAllCmd = "atmos_monitor_alarm_reset_all";
+
+        // Packet data
+        /// <summary>
+        ///     Data response that contains the threshold types in an atmos monitor alarm.
+        /// </summary>
+        public const string AtmosMonitorAlarmThresholdTypes = "atmos_monitor_alarm_threshold_types";
+
+        /// <summary>
+        ///     Data response that contains the source of an atmos alarm.
+        /// </summary>
+        public const string AtmosMonitorAlarmSrc = "atmos_monitor_alarm_source";
+
+        /// <summary>
+        ///     Data response that contains the maximum alarm in an atmos alarm network.
+        /// </summary>
+        public const string AtmosMonitorAlarmNetMax = "atmos_monitor_alarm_net_max";
+
+        /// <summary>
+        ///     Frequency (all prototypes that use AtmosMonitor should use this)
+        /// </summary>
+        public const int AtmosMonitorApcFreq = 1621;
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<AtmosMonitorComponent, ComponentInit>(OnAtmosMonitorInit);
+            SubscribeLocalEvent<AtmosMonitorComponent, ComponentStartup>(OnAtmosMonitorStartup);
+            SubscribeLocalEvent<AtmosMonitorComponent, ComponentShutdown>(OnAtmosMonitorShutdown);
+            SubscribeLocalEvent<AtmosMonitorComponent, AtmosDeviceUpdateEvent>(OnAtmosUpdate);
+            SubscribeLocalEvent<AtmosMonitorComponent, TileFireEvent>(OnFireEvent);
+            SubscribeLocalEvent<AtmosMonitorComponent, PowerChangedEvent>(OnPowerChangedEvent);
+            SubscribeLocalEvent<AtmosMonitorComponent, BeforePacketSentEvent>(BeforePacketRecv);
+            SubscribeLocalEvent<AtmosMonitorComponent, PacketSentEvent>(OnPacketRecv);
+        }
+
+        private void OnAtmosMonitorInit(EntityUid uid, AtmosMonitorComponent component, ComponentInit args)
+        {
+            if (component.TemperatureThresholdId != null)
+                component.TemperatureThreshold = _prototypeManager.Index<AtmosAlarmThreshold>(component.TemperatureThresholdId);
+
+            if (component.PressureThresholdId != null)
+                component.PressureThreshold = _prototypeManager.Index<AtmosAlarmThreshold>(component.PressureThresholdId);
+
+            if (component.GasThresholdIds != null)
+            {
+                component.GasThresholds = new();
+                foreach (var (gas, id) in component.GasThresholdIds)
+                    if (_prototypeManager.TryIndex<AtmosAlarmThreshold>(id, out var gasThreshold))
+                        component.GasThresholds.Add(gas, gasThreshold);
+            }
+        }
+
+        private void OnAtmosMonitorStartup(EntityUid uid, AtmosMonitorComponent component, ComponentStartup args)
+        {
+            if (component.PowerRecvComponent == null
+                && component.AtmosDeviceComponent != null)
+            {
+                _atmosDeviceSystem.LeaveAtmosphere(component.AtmosDeviceComponent);
+                return;
+            }
+
+            _checkPos.Add(uid);
+        }
+
+        private void OnAtmosMonitorShutdown(EntityUid uid, AtmosMonitorComponent component, ComponentShutdown args)
+        {
+            if (_checkPos.Contains(uid)) _checkPos.Remove(uid);
+        }
+
+        // hackiest shit ever but there's no PostStartup event
+        private HashSet<EntityUid> _checkPos = new();
+
+        public override void Update(float frameTime)
+        {
+            foreach (var uid in _checkPos)
+                OpenAirOrReposition(uid);
+        }
+
+        private void OpenAirOrReposition(EntityUid uid, AtmosMonitorComponent? component = null, AppearanceComponent? appearance = null)
+        {
+            if (!Resolve(uid, ref component, ref appearance)) return;
+
+            var transform = Transform(component.Owner);
+            // atmos alarms will first attempt to get the air
+            // directly underneath it - if not, then it will
+            // instead place itself directly in front of the tile
+            // it is facing, and then visually shift itself back
+            // via sprite offsets (SS13 style but fuck it)
+            var coords = transform.Coordinates;
+
+            if (_atmosphereSystem.IsTileAirBlocked(coords))
+            {
+
+                var rotPos = transform.LocalRotation.RotateVec(new Vector2(0, -1));
+                transform.Anchored = false;
+                coords = coords.Offset(rotPos);
+                transform.Coordinates = coords;
+
+                appearance.SetData("offset", -rotPos);
+
+                transform.Anchored = true;
+            }
+
+            GasMixture? air = _atmosphereSystem.GetTileMixture(coords);
+            component.TileGas = air;
+
+            _checkPos.Remove(uid);
+        }
+
+        private void BeforePacketRecv(EntityUid uid, AtmosMonitorComponent component, BeforePacketSentEvent args)
+        {
+            if (!component.NetEnabled) args.Cancel();
+        }
+
+        private void OnPacketRecv(EntityUid uid, AtmosMonitorComponent component, PacketSentEvent args)
+        {
+            // sync the internal 'last alarm state' from
+            // the other alarms, so that we can calculate
+            // the highest network alarm state at any time
+            if (!args.Data.TryGetValue(DeviceNetworkConstants.Command, out string? cmd)
+                || !EntityManager.TryGetComponent(uid, out AtmosAlarmableComponent? alarmable)
+                || !EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn))
+                return;
+
+            // ignore packets from self, ignore from different frequency
+            if (netConn.Address == args.SenderAddress) return;
+
+            switch (cmd)
+            {
+                // sync on alarm or explicit sync
+                case AtmosMonitorAlarmCmd:
+                case AtmosMonitorAlarmSyncCmd:
+                    if (args.Data.TryGetValue(AtmosMonitorAlarmSrc, out string? src)
+                        && alarmable.AlarmedByPrototypes.Contains(src)
+                        && args.Data.TryGetValue(DeviceNetworkConstants.CmdSetState, out AtmosMonitorAlarmType state)
+                        && !component.NetworkAlarmStates.TryAdd(args.SenderAddress, state))
+                        component.NetworkAlarmStates[args.SenderAddress] = state;
+                    break;
+                case AtmosMonitorAlarmResetAllCmd:
+                    if (args.Data.TryGetValue(AtmosMonitorAlarmSrc, out string? resetSrc)
+                        && alarmable.AlarmedByPrototypes.Contains(resetSrc))
+                    {
+                        component.LastAlarmState = AtmosMonitorAlarmType.Normal;
+                        component.NetworkAlarmStates.Clear();
+                    }
+                    break;
+            }
+
+            if (component.DisplayMaxAlarmInNet)
+            {
+                if (EntityManager.TryGetComponent(component.Owner, out AppearanceComponent? appearanceComponent))
+                    appearanceComponent.SetData("alarmType", component.HighestAlarmInNetwork);
+
+                if (component.HighestAlarmInNetwork == AtmosMonitorAlarmType.Danger) PlayAlertSound(uid, component);
+            }
+
+        }
+
+        private void OnPowerChangedEvent(EntityUid uid, AtmosMonitorComponent component, PowerChangedEvent args)
+        {
+            if (!args.Powered)
+            {
+                if (component.AtmosDeviceComponent != null
+                    && component.AtmosDeviceComponent.JoinedGrid != null)
+                {
+                    _atmosDeviceSystem.LeaveAtmosphere(component.AtmosDeviceComponent);
+                    component.TileGas = null;
+                }
+
+                // clear memory when power cycled
+                component.LastAlarmState = AtmosMonitorAlarmType.Normal;
+                component.NetworkAlarmStates.Clear();
+            }
+            else if (args.Powered)
+            {
+                if (component.AtmosDeviceComponent != null
+                    && component.AtmosDeviceComponent.JoinedGrid == null)
+                {
+                    _atmosDeviceSystem.JoinAtmosphere(component.AtmosDeviceComponent);
+                    var coords = Transform(component.Owner).Coordinates;
+                    var air = _atmosphereSystem.GetTileMixture(coords);
+                    component.TileGas = air;
+                }
+            }
+
+            if (EntityManager.TryGetComponent(component.Owner, out AppearanceComponent? appearanceComponent))
+            {
+                appearanceComponent.SetData("powered", args.Powered);
+                appearanceComponent.SetData("alarmType", component.LastAlarmState);
+            }
+        }
+
+        private void OnFireEvent(EntityUid uid, AtmosMonitorComponent component, TileFireEvent args)
+        {
+            if (component.PowerRecvComponent == null
+                || !component.PowerRecvComponent.Powered)
+                return;
+
+            // if we're monitoring for atmos fire, then we make it similar to a smoke detector
+            // and just outright trigger a danger event
+            //
+            // somebody else can reset it :sunglasses:
+            if (component.MonitorFire
+                && component.LastAlarmState != AtmosMonitorAlarmType.Danger)
+                Alert(uid, AtmosMonitorAlarmType.Danger, new []{ AtmosMonitorThresholdType.Temperature }, component); // technically???
+
+            // only monitor state elevation so that stuff gets alarmed quicker during a fire,
+            // let the atmos update loop handle when temperature starts to reach different
+            // thresholds and different states than normal -> warning -> danger
+            if (component.TemperatureThreshold != null
+                && component.TemperatureThreshold.CheckThreshold(args.Temperature, out var temperatureState)
+                && temperatureState > component.LastAlarmState)
+                Alert(uid, AtmosMonitorAlarmType.Danger, new []{ AtmosMonitorThresholdType.Temperature }, component);
+        }
+
+        private void OnAtmosUpdate(EntityUid uid, AtmosMonitorComponent component, AtmosDeviceUpdateEvent args)
+        {
+            if (component.PowerRecvComponent == null
+                || !component.PowerRecvComponent.Powered)
+                return;
+
+            // can't hurt
+            // (in case something is making AtmosDeviceUpdateEvents
+            // outside the typical device loop)
+            if (component.AtmosDeviceComponent == null
+                || component.AtmosDeviceComponent.JoinedGrid == null)
+                return;
+
+            // if we're not monitoring atmos, don't bother
+            if (component.TemperatureThreshold == null
+                && component.PressureThreshold == null
+                && component.GasThresholds == null)
+                return;
+
+            UpdateState(uid, component.TileGas, component);
+        }
+
+        // Update checks the current air if it exceeds thresholds of
+        // any kind.
+        //
+        // If any threshold exceeds the other, that threshold
+        // immediately replaces the current recorded state.
+        //
+        // If the threshold does not match the current state
+        // of the monitor, it is set in the Alert call.
+        private void UpdateState(EntityUid uid, GasMixture? air, AtmosMonitorComponent? monitor = null)
+        {
+            if (air == null) return;
+
+            if (!Resolve(uid, ref monitor)) return;
+
+            AtmosMonitorAlarmType state = AtmosMonitorAlarmType.Normal;
+            List<AtmosMonitorThresholdType> alarmTypes = new();
+
+            if (monitor.TemperatureThreshold != null
+                && monitor.TemperatureThreshold.CheckThreshold(air.Temperature, out var temperatureState)
+                && temperatureState > state)
+            {
+                state = temperatureState;
+                alarmTypes.Add(AtmosMonitorThresholdType.Temperature);
+            }
+
+            if (monitor.PressureThreshold != null
+                && monitor.PressureThreshold.CheckThreshold(air.Pressure, out var pressureState)
+                && pressureState > state)
+            {
+                state = pressureState;
+                alarmTypes.Add(AtmosMonitorThresholdType.Pressure);
+            }
+
+            if (monitor.GasThresholds != null)
+            {
+                foreach (var (gas, threshold) in monitor.GasThresholds)
+                {
+                    var gasRatio = air.GetMoles(gas) / air.TotalMoles;
+                    if (threshold.CheckThreshold(gasRatio, out var gasState)
+                        && gasState > state)
+                    {
+                        state = gasState;
+                        alarmTypes.Add(AtmosMonitorThresholdType.Gas);
+                    }
+                }
+            }
+
+            // if the state of the current air doesn't match the last alarm state,
+            // we update the state
+            if (state != monitor.LastAlarmState)
+            {
+                Alert(uid, state, alarmTypes, monitor);
+            }
+        }
+
+        /// <summary>
+        ///     Alerts the network that the state of a monitor has changed.
+        /// </summary>
+        /// <param name="state">The alarm state to set this monitor to.</param>
+        /// <param name="alarms">The alarms that caused this alarm state.</param>
+        public void Alert(EntityUid uid, AtmosMonitorAlarmType state, IEnumerable<AtmosMonitorThresholdType>? alarms = null, AtmosMonitorComponent? monitor = null)
+        {
+            if (!Resolve(uid, ref monitor)) return;
+            monitor.LastAlarmState = state;
+            if (EntityManager.TryGetComponent(monitor.Owner, out AppearanceComponent? appearanceComponent))
+                appearanceComponent.SetData("alarmType", monitor.LastAlarmState);
+
+            BroadcastAlertPacket(monitor, alarms);
+
+            if (state == AtmosMonitorAlarmType.Danger) PlayAlertSound(uid, monitor);
+
+            if (EntityManager.TryGetComponent(monitor.Owner, out AtmosAlarmableComponent alarmable)
+                && !alarmable.IgnoreAlarms)
+                RaiseLocalEvent(monitor.Owner, new AtmosMonitorAlarmEvent(monitor.LastAlarmState, monitor.HighestAlarmInNetwork));
+            // TODO: Central system that grabs *all* alarms from wired network
+        }
+
+        private void PlayAlertSound(EntityUid uid, AtmosMonitorComponent? monitor = null)
+        {
+            if (!Resolve(uid, ref monitor)) return;
+
+            SoundSystem.Play(Filter.Pvs(uid), monitor.AlarmSound.GetSound(), uid, AudioParams.Default.WithVolume(monitor.AlarmVolume));
+        }
+
+        /// <summary>
+        ///     Resets a single monitor's alarm.
+        /// </summary>
+        public void Reset(EntityUid uid) =>
+            Alert(uid, AtmosMonitorAlarmType.Normal);
+
+        /// <summary>
+        ///     Resets a network's alarms, using this monitor as a source.
+        /// </summary>
+        /// <remarks>
+        ///     The resulting packet will have this monitor set as the source, using its prototype ID if it has one - otherwise just sending an empty string.
+        /// </remarks>
+        public void ResetAll(EntityUid uid, AtmosMonitorComponent? monitor = null)
+        {
+            if (!Resolve(uid, ref monitor)) return;
+
+            var prototype = Prototype(monitor.Owner);
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AtmosMonitorAlarmResetAllCmd,
+                [AtmosMonitorAlarmSrc] = prototype != null ? prototype.ID : string.Empty
+            };
+
+            _deviceNetSystem.QueuePacket(monitor.Owner, string.Empty, AtmosMonitorApcFreq, payload, true);
+            monitor.NetworkAlarmStates.Clear();
+
+            Alert(uid, AtmosMonitorAlarmType.Normal, null, monitor);
+        }
+
+        // (TODO: maybe just cache monitors in other monitors?)
+        /// <summary>
+        ///     Syncs the current state of this monitor to the network (to avoid alerting other monitors).
+        /// </summary>
+        private void Sync(AtmosMonitorComponent monitor)
+        {
+            if (!monitor.NetEnabled) return;
+
+            var prototype = Prototype(monitor.Owner);
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AtmosMonitorAlarmSyncCmd,
+                [DeviceNetworkConstants.CmdSetState] = monitor.LastAlarmState,
+                [AtmosMonitorAlarmSrc] = prototype != null ? prototype.ID : string.Empty
+            };
+
+            _deviceNetSystem.QueuePacket(monitor.Owner, string.Empty, AtmosMonitorApcFreq, payload, true);
+        }
+
+        /// <summary>
+        ///	Broadcasts an alert packet to all devices on the network,
+        ///	which consists of the current alarm types,
+        ///	the highest alarm currently cached by this monitor,
+        ///	and the current alarm state of the monitor (so other
+        ///	alarms can sync to it).
+        /// </summary>
+        /// <remarks>
+        ///	Alarmables use the highest alarm to ensure that a monitor's
+        ///	state doesn't override if the alarm is lower. The state
+        ///	is synced between monitors the moment a monitor sends out an alarm,
+        ///	or if it is explicitly synced (see ResetAll/Sync).
+        /// </remarks>
+        private void BroadcastAlertPacket(AtmosMonitorComponent monitor, IEnumerable<AtmosMonitorThresholdType>? alarms = null)
+        {
+            if (!monitor.NetEnabled) return;
+
+            string source = string.Empty;
+            if (alarms == null) alarms = new List<AtmosMonitorThresholdType>();
+            var prototype = Prototype(monitor.Owner);
+            if (prototype != null) source = prototype.ID;
+
+            var payload = new NetworkPayload
+            {
+                [DeviceNetworkConstants.Command] = AtmosMonitorAlarmCmd,
+                [DeviceNetworkConstants.CmdSetState] = monitor.LastAlarmState,
+                [AtmosMonitorAlarmNetMax] = monitor.HighestAlarmInNetwork,
+                [AtmosMonitorAlarmThresholdTypes] = alarms,
+                [AtmosMonitorAlarmSrc] = source
+            };
+
+            _deviceNetSystem.QueuePacket(monitor.Owner, string.Empty, AtmosMonitorApcFreq, payload, true);
+        }
+
+        /// <summary>
+        ///     Set a monitor's threshold.
+        /// </summary>
+        /// <param name="type">The type of threshold to change.</param>
+        /// <param name="threshold">Threshold data.</param>
+        /// <param name="gas">Gas, if applicable.</param>
+        public void SetThreshold(EntityUid uid, AtmosMonitorThresholdType type, AtmosAlarmThreshold threshold, Gas? gas = null, AtmosMonitorComponent? monitor = null)
+        {
+            if (!Resolve(uid, ref monitor)) return;
+
+            switch (type)
+            {
+                case AtmosMonitorThresholdType.Pressure:
+                    monitor.PressureThreshold = threshold;
+                    break;
+                case AtmosMonitorThresholdType.Temperature:
+                    monitor.TemperatureThreshold = threshold;
+                    break;
+                case AtmosMonitorThresholdType.Gas:
+                    if (gas == null || monitor.GasThresholds == null) return;
+                    monitor.GasThresholds[(Gas) gas] = threshold;
+                    break;
+            }
+
+        }
+    }
+
+    public class AtmosMonitorAlarmEvent : EntityEventArgs
+    {
+        public AtmosMonitorAlarmType Type { get; }
+        public AtmosMonitorAlarmType HighestNetworkType { get; }
+
+        public AtmosMonitorAlarmEvent(AtmosMonitorAlarmType type, AtmosMonitorAlarmType netMax)
+        {
+            Type = type;
+            HighestNetworkType = netMax;
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Monitor/Systems/FireAlarmSystem.cs b/Content.Server/Atmos/Monitor/Systems/FireAlarmSystem.cs
new file mode 100644
index 0000000000..77def5199b
--- /dev/null
+++ b/Content.Server/Atmos/Monitor/Systems/FireAlarmSystem.cs
@@ -0,0 +1,42 @@
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Power.Components;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Interaction;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Atmos.Monitor.Systems
+{
+    public class FireAlarmSystem : EntitySystem
+    {
+        [Dependency] private readonly AtmosMonitorSystem _monitorSystem = default!;
+        [Dependency] private readonly SharedInteractionSystem _interactionSystem = default!;
+
+        public override void Initialize()
+        {
+            SubscribeLocalEvent<FireAlarmComponent, InteractHandEvent>(OnInteractHand);
+        }
+
+        private void OnInteractHand(EntityUid uid, FireAlarmComponent component, InteractHandEvent args)
+        {
+            if (!_interactionSystem.InRangeUnobstructed(args.User, args.Target))
+                return;
+
+            if (EntityManager.TryGetComponent(args.User, out ActorComponent? actor)
+                && EntityManager.TryGetComponent(uid, out AtmosMonitorComponent? monitor)
+                && EntityManager.TryGetComponent(uid, out ApcPowerReceiverComponent? power)
+                && power.Powered)
+            {
+                if (monitor.HighestAlarmInNetwork == AtmosMonitorAlarmType.Normal)
+                {
+                    _monitorSystem.Alert(uid, AtmosMonitorAlarmType.Danger);
+                }
+                else
+                {
+                    _monitorSystem.ResetAll(uid);
+                }
+            }
+        }
+    }
+}
diff --git a/Content.Server/Atmos/Piping/Binary/Components/GasDualPortVentPumpComponent.cs b/Content.Server/Atmos/Piping/Binary/Components/GasDualPortVentPumpComponent.cs
index eda13dc175..e59833c8a4 100644
--- a/Content.Server/Atmos/Piping/Binary/Components/GasDualPortVentPumpComponent.cs
+++ b/Content.Server/Atmos/Piping/Binary/Components/GasDualPortVentPumpComponent.cs
@@ -1,6 +1,6 @@
 using System;
-using Content.Server.Atmos.Piping.Unary.Components;
 using Content.Shared.Atmos;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
diff --git a/Content.Server/Atmos/Piping/Binary/EntitySystems/GasDualPortVentPumpSystem.cs b/Content.Server/Atmos/Piping/Binary/EntitySystems/GasDualPortVentPumpSystem.cs
index 00ad837a56..e1a3cdf9e4 100644
--- a/Content.Server/Atmos/Piping/Binary/EntitySystems/GasDualPortVentPumpSystem.cs
+++ b/Content.Server/Atmos/Piping/Binary/EntitySystems/GasDualPortVentPumpSystem.cs
@@ -2,10 +2,10 @@ using System;
 using Content.Server.Atmos.EntitySystems;
 using Content.Server.Atmos.Piping.Binary.Components;
 using Content.Server.Atmos.Piping.Components;
-using Content.Server.Atmos.Piping.Unary.Components;
 using Content.Server.NodeContainer;
 using Content.Server.NodeContainer.Nodes;
 using Content.Shared.Atmos;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using Content.Shared.Atmos.Visuals;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
diff --git a/Content.Server/Atmos/Piping/Unary/Components/GasVentPumpComponent.cs b/Content.Server/Atmos/Piping/Unary/Components/GasVentPumpComponent.cs
index 39e3827db6..bb5cef2c8b 100644
--- a/Content.Server/Atmos/Piping/Unary/Components/GasVentPumpComponent.cs
+++ b/Content.Server/Atmos/Piping/Unary/Components/GasVentPumpComponent.cs
@@ -1,5 +1,6 @@
 using System;
 using Content.Shared.Atmos;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -14,6 +15,9 @@ namespace Content.Server.Atmos.Piping.Unary.Components
         [ViewVariables(VVAccess.ReadWrite)]
         public bool Enabled { get; set; } = true;
 
+        [ViewVariables]
+        public bool IsDirty { get; set; } = false;
+
         [ViewVariables(VVAccess.ReadWrite)]
         public bool Welded { get; set; } = false;
 
@@ -33,19 +37,30 @@ namespace Content.Server.Atmos.Piping.Unary.Components
 
         [ViewVariables(VVAccess.ReadWrite)]
         public float InternalPressureBound { get; set; } = 0f;
-    }
 
-    public enum VentPumpDirection : sbyte
-    {
-        Siphoning = 0,
-        Releasing = 1,
-    }
+        public GasVentPumpData ToAirAlarmData()
+        {
+            if (!IsDirty) return new GasVentPumpData { Dirty = IsDirty };
 
-    [Flags]
-    public enum VentPressureBound : sbyte
-    {
-        NoBound       = 0,
-        InternalBound = 1,
-        ExternalBound = 2,
+            return new GasVentPumpData
+            {
+                Enabled = Enabled,
+                Dirty = IsDirty,
+                PumpDirection = PumpDirection,
+                PressureChecks = PressureChecks,
+                ExternalPressureBound = ExternalPressureBound,
+                InternalPressureBound = InternalPressureBound
+            };
+        }
+
+        public void FromAirAlarmData(GasVentPumpData data)
+        {
+            Enabled = data.Enabled;
+            IsDirty = data.Dirty;
+            PumpDirection = (VentPumpDirection) data.PumpDirection!;
+            PressureChecks = (VentPressureBound) data.PressureChecks!;
+            ExternalPressureBound = (float) data.ExternalPressureBound!;
+            InternalPressureBound = (float) data.InternalPressureBound!;
+        }
     }
 }
diff --git a/Content.Server/Atmos/Piping/Unary/Components/GasVentScrubberComponent.cs b/Content.Server/Atmos/Piping/Unary/Components/GasVentScrubberComponent.cs
index 0bc792a81f..f92adc1ff7 100644
--- a/Content.Server/Atmos/Piping/Unary/Components/GasVentScrubberComponent.cs
+++ b/Content.Server/Atmos/Piping/Unary/Components/GasVentScrubberComponent.cs
@@ -1,5 +1,7 @@
 using System.Collections.Generic;
+using System.Linq;
 using Content.Shared.Atmos;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
@@ -14,6 +16,9 @@ namespace Content.Server.Atmos.Piping.Unary.Components
         [ViewVariables(VVAccess.ReadWrite)]
         public bool Enabled { get; set; } = true;
 
+        [ViewVariables]
+        public bool IsDirty { get; set; } = false;
+
         [ViewVariables(VVAccess.ReadWrite)]
         public bool Welded { get; set; } = false;
 
@@ -22,13 +27,7 @@ namespace Content.Server.Atmos.Piping.Unary.Components
         public string OutletName { get; set; } = "pipe";
 
         [ViewVariables]
-        public readonly HashSet<Gas> FilterGases = new()
-        {
-            Gas.CarbonDioxide,
-            Gas.Plasma,
-            Gas.Tritium,
-            Gas.WaterVapor
-        };
+        public readonly HashSet<Gas> FilterGases = GasVentScrubberData.DefaultFilterGases;
 
         [ViewVariables(VVAccess.ReadWrite)]
         public ScrubberPumpDirection PumpDirection { get; set; } = ScrubberPumpDirection.Scrubbing;
@@ -38,11 +37,36 @@ namespace Content.Server.Atmos.Piping.Unary.Components
 
         [ViewVariables(VVAccess.ReadWrite)]
         public bool WideNet { get; set; } = false;
-    }
 
-    public enum ScrubberPumpDirection : sbyte
-    {
-        Siphoning = 0,
-        Scrubbing = 1,
+        public GasVentScrubberData ToAirAlarmData()
+        {
+            if (!IsDirty) return new GasVentScrubberData { Dirty = IsDirty };
+
+            return new GasVentScrubberData
+            {
+                Enabled = Enabled,
+                Dirty = IsDirty,
+                FilterGases = FilterGases,
+                PumpDirection = PumpDirection,
+                VolumeRate = VolumeRate,
+                WideNet = WideNet
+            };
+        }
+
+        public void FromAirAlarmData(GasVentScrubberData data)
+        {
+            Enabled = data.Enabled;
+            IsDirty = data.Dirty;
+            PumpDirection = (ScrubberPumpDirection) data.PumpDirection!;
+            VolumeRate = (float) data.VolumeRate!;
+            WideNet = data.WideNet;
+
+            if (!data.FilterGases!.SequenceEqual(FilterGases))
+            {
+                FilterGases.Clear();
+                foreach (var gas in data.FilterGases!)
+                    FilterGases.Add(gas);
+            }
+        }
     }
 }
diff --git a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentPumpSystem.cs b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentPumpSystem.cs
index dd0b0ee910..8675268437 100644
--- a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentPumpSystem.cs
+++ b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentPumpSystem.cs
@@ -1,10 +1,19 @@
 using System;
 using Content.Server.Atmos.EntitySystems;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.Monitor.Systems;
 using Content.Server.Atmos.Piping.Components;
 using Content.Server.Atmos.Piping.Unary.Components;
+using Content.Server.DeviceNetwork;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.DeviceNetwork.Systems;
 using Content.Server.NodeContainer;
 using Content.Server.NodeContainer.Nodes;
+using Content.Server.Power.Components;
 using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Monitor.Components;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using Content.Shared.Atmos.Visuals;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
@@ -16,6 +25,7 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
     public class GasVentPumpSystem : EntitySystem
     {
         [Dependency] private readonly AtmosphereSystem _atmosphereSystem = default!;
+        [Dependency] private readonly DeviceNetworkSystem _deviceNetSystem = default!;
 
         public override void Initialize()
         {
@@ -23,6 +33,9 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
 
             SubscribeLocalEvent<GasVentPumpComponent, AtmosDeviceUpdateEvent>(OnGasVentPumpUpdated);
             SubscribeLocalEvent<GasVentPumpComponent, AtmosDeviceDisabledEvent>(OnGasVentPumpLeaveAtmosphere);
+            SubscribeLocalEvent<GasVentPumpComponent, AtmosMonitorAlarmEvent>(OnAtmosAlarm);
+            SubscribeLocalEvent<GasVentPumpComponent, PowerChangedEvent>(OnPowerChanged);
+            SubscribeLocalEvent<GasVentPumpComponent, PacketSentEvent>(OnPacketRecv);
         }
 
         private void OnGasVentPumpUpdated(EntityUid uid, GasVentPumpComponent vent, AtmosDeviceUpdateEvent args)
@@ -99,5 +112,56 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
                 appearance.SetData(VentPumpVisuals.State, VentPumpState.Off);
             }
         }
+
+        private void OnAtmosAlarm(EntityUid uid, GasVentPumpComponent component, AtmosMonitorAlarmEvent args)
+        {
+            if (args.HighestNetworkType == AtmosMonitorAlarmType.Danger)
+            {
+                component.Enabled = false;
+            }
+            else if (args.HighestNetworkType == AtmosMonitorAlarmType.Normal)
+            {
+                component.Enabled = true;
+            }
+        }
+
+        private void OnPowerChanged(EntityUid uid, GasVentPumpComponent component, PowerChangedEvent args)
+        {
+            component.Enabled = args.Powered;
+        }
+
+        private void OnPacketRecv(EntityUid uid, GasVentPumpComponent component, PacketSentEvent args)
+        {
+            if (!EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn)
+                || !EntityManager.TryGetComponent(uid, out AtmosAlarmableComponent alarmable)
+                || !args.Data.TryGetValue(DeviceNetworkConstants.Command, out var cmd))
+                return;
+
+            var payload = new NetworkPayload();
+
+            switch (cmd)
+            {
+                case AirAlarmSystem.AirAlarmSyncCmd:
+                    payload.Add(DeviceNetworkConstants.Command, AirAlarmSystem.AirAlarmSyncData);
+                    payload.Add(AirAlarmSystem.AirAlarmSyncData, component.ToAirAlarmData());
+
+                    _deviceNetSystem.QueuePacket(uid, args.SenderAddress, AirAlarmSystem.Freq, payload);
+
+                    return;
+                case AirAlarmSystem.AirAlarmSetData:
+                    if (!args.Data.TryGetValue(AirAlarmSystem.AirAlarmSetData, out GasVentPumpData? setData))
+                        break;
+
+                    component.FromAirAlarmData(setData);
+                    alarmable.IgnoreAlarms = setData.IgnoreAlarms;
+                    payload.Add(DeviceNetworkConstants.Command, AirAlarmSystem.AirAlarmSetDataStatus);
+                    payload.Add(AirAlarmSystem.AirAlarmSetDataStatus, true);
+
+                    _deviceNetSystem.QueuePacket(uid, string.Empty, AirAlarmSystem.Freq, payload, true);
+
+                    return;
+            }
+        }
+
     }
 }
diff --git a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs
index 8f08c4c1f8..c5080c30fb 100644
--- a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs
+++ b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs
@@ -1,11 +1,19 @@
 using System;
 using Content.Server.Atmos.EntitySystems;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.Monitor.Systems;
 using Content.Server.Atmos.Piping.Components;
 using Content.Server.Atmos.Piping.Unary.Components;
+using Content.Server.DeviceNetwork;
+using Content.Server.DeviceNetwork.Components;
+using Content.Server.DeviceNetwork.Systems;
 using Content.Server.NodeContainer;
 using Content.Server.NodeContainer.Nodes;
+using Content.Server.Power.Components;
 using Content.Shared.Atmos;
 using Content.Shared.Atmos.Piping.Unary.Visuals;
+using Content.Shared.Atmos.Monitor;
+using Content.Shared.Atmos.Piping.Unary.Components;
 using JetBrains.Annotations;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -17,6 +25,7 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
     public class GasVentScrubberSystem : EntitySystem
     {
         [Dependency] private readonly AtmosphereSystem _atmosphereSystem = default!;
+        [Dependency] private readonly DeviceNetworkSystem _deviceNetSystem = default!;
 
         public override void Initialize()
         {
@@ -24,6 +33,10 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
 
             SubscribeLocalEvent<GasVentScrubberComponent, AtmosDeviceUpdateEvent>(OnVentScrubberUpdated);
             SubscribeLocalEvent<GasVentScrubberComponent, AtmosDeviceDisabledEvent>(OnVentScrubberLeaveAtmosphere);
+            SubscribeLocalEvent<GasVentScrubberComponent, AtmosMonitorAlarmEvent>(OnAtmosAlarm);
+            SubscribeLocalEvent<GasVentScrubberComponent, PowerChangedEvent>(OnPowerChanged);
+            SubscribeLocalEvent<GasVentScrubberComponent, PacketSentEvent>(OnPacketRecv);
+
         }
 
         private void OnVentScrubberUpdated(EntityUid uid, GasVentScrubberComponent scrubber, AtmosDeviceUpdateEvent args)
@@ -102,5 +115,53 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
                 outlet.AssumeAir(removed);
             }
         }
+
+        private void OnAtmosAlarm(EntityUid uid, GasVentScrubberComponent component, AtmosMonitorAlarmEvent args)
+        {
+            if (args.HighestNetworkType == AtmosMonitorAlarmType.Danger)
+            {
+                component.Enabled = false;
+            }
+            else if (args.HighestNetworkType == AtmosMonitorAlarmType.Normal)
+            {
+                component.Enabled = true;
+            }
+        }
+
+        private void OnPowerChanged(EntityUid uid, GasVentScrubberComponent component, PowerChangedEvent args) =>
+            component.Enabled = args.Powered;
+
+        private void OnPacketRecv(EntityUid uid, GasVentScrubberComponent component, PacketSentEvent args)
+        {
+            if (!EntityManager.TryGetComponent(uid, out DeviceNetworkComponent netConn)
+                || !EntityManager.TryGetComponent(uid, out AtmosAlarmableComponent alarmable)
+                || !args.Data.TryGetValue(DeviceNetworkConstants.Command, out var cmd))
+                return;
+
+            var payload = new NetworkPayload();
+
+            switch (cmd)
+            {
+                case AirAlarmSystem.AirAlarmSyncCmd:
+                    payload.Add(DeviceNetworkConstants.Command, AirAlarmSystem.AirAlarmSyncData);
+                    payload.Add(AirAlarmSystem.AirAlarmSyncData, component.ToAirAlarmData());
+
+                    _deviceNetSystem.QueuePacket(uid, args.SenderAddress, AirAlarmSystem.Freq, payload);
+
+                    return;
+                case AirAlarmSystem.AirAlarmSetData:
+                    if (!args.Data.TryGetValue(AirAlarmSystem.AirAlarmSetData, out GasVentScrubberData? setData))
+                        break;
+
+                    component.FromAirAlarmData(setData);
+                    alarmable.IgnoreAlarms = setData.IgnoreAlarms;
+                    payload.Add(DeviceNetworkConstants.Command, AirAlarmSystem.AirAlarmSetDataStatus);
+                    payload.Add(AirAlarmSystem.AirAlarmSetDataStatus, true);
+
+                    _deviceNetSystem.QueuePacket(uid, string.Empty, AirAlarmSystem.Freq, payload, true);
+
+                    return;
+            }
+        }
     }
 }
diff --git a/Content.Server/Doors/Systems/FirelockSystem.cs b/Content.Server/Doors/Systems/FirelockSystem.cs
index 5f3d2e1c40..fedd2a4d2a 100644
--- a/Content.Server/Doors/Systems/FirelockSystem.cs
+++ b/Content.Server/Doors/Systems/FirelockSystem.cs
@@ -1,8 +1,12 @@
-using Content.Server.Doors.Components;
+using Content.Server.Atmos.Monitor.Components;
+using Content.Server.Atmos.Monitor.Systems;
+using Content.Server.Doors.Components;
+using Content.Shared.Atmos.Monitor;
 using Content.Shared.Doors;
 using Content.Shared.Popups;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Localization;
+using Robust.Shared.Log;
 
 namespace Content.Server.Doors.Systems
 {
@@ -18,6 +22,7 @@ namespace Content.Server.Doors.Systems
             SubscribeLocalEvent<FirelockComponent, DoorClickShouldActivateEvent>(OnDoorClickShouldActivate);
             SubscribeLocalEvent<FirelockComponent, BeforeDoorPryEvent>(OnBeforeDoorPry);
             SubscribeLocalEvent<FirelockComponent, BeforeDoorAutoCloseEvent>(OnBeforeDoorAutoclose);
+            SubscribeLocalEvent<FirelockComponent, AtmosMonitorAlarmEvent>(OnAtmosAlarm);
         }
 
         private void OnBeforeDoorOpened(EntityUid uid, FirelockComponent component, BeforeDoorOpenedEvent args)
@@ -62,8 +67,31 @@ namespace Content.Server.Doors.Systems
 
         private void OnBeforeDoorAutoclose(EntityUid uid, FirelockComponent component, BeforeDoorAutoCloseEvent args)
         {
-            // Firelocks can't autoclose, they must be manually closed
-            args.Cancel();
+            // Make firelocks autoclose, but only if the last alarm type it
+            // remembers was a danger. This is to prevent people from
+            // flooding hallways with endless bad air/fire.
+            if (!EntityManager.TryGetComponent(uid, out AtmosAlarmableComponent alarmable))
+            {
+                args.Cancel();
+                return;
+            }
+            if (alarmable.HighestNetworkState != AtmosMonitorAlarmType.Danger)
+                args.Cancel();
+        }
+
+        private void OnAtmosAlarm(EntityUid uid, FirelockComponent component, AtmosMonitorAlarmEvent args)
+        {
+            if (component.DoorComponent == null) return;
+
+            if (args.HighestNetworkType == AtmosMonitorAlarmType.Normal)
+            {
+                if (component.DoorComponent.State == SharedDoorComponent.DoorState.Closed)
+                    component.DoorComponent.Open();
+            }
+            else if (args.HighestNetworkType == AtmosMonitorAlarmType.Danger)
+            {
+                component.EmergencyPressureStop();
+            }
         }
     }
 }
diff --git a/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs b/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs
new file mode 100644
index 0000000000..3346bdbd60
--- /dev/null
+++ b/Content.Shared/Atmos/Monitor/AtmosAlarmThresholdPrototype.cs
@@ -0,0 +1,257 @@
+using System;
+using Content.Shared.Atmos.Monitor;
+using Robust.Shared.Log;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.Atmos.Monitor
+{
+    // mostly based around floats and percentages, no literals
+    // except for the range boundaries
+    [Prototype("alarmThreshold")]
+    [Serializable, NetSerializable]
+    public class AtmosAlarmThreshold : IPrototype, ISerializationHooks
+    {
+        [DataField("id", required: true)]
+        public string ID { get; } = default!;
+        [ViewVariables]
+        [DataField("ignore")]
+        public bool Ignore = false;
+
+        // zero bounds are not allowed - just
+        // set the bound to null if you want
+        // to disable it
+        [ViewVariables]
+        [DataField("upperBound")]
+        public float? UpperBound { get; private set; }
+
+        [ViewVariables]
+        [DataField("lowerBound")]
+        public float? LowerBound { get; private set; }
+
+        // upper warning percentage
+        // must always cause UpperWarningBound
+        // to be smaller
+        [ViewVariables]
+        [DataField("upperWarnAround")]
+        public float? UpperWarningPercentage { get; private set; }
+
+        // lower warning percentage
+        // must always cause LowerWarningBound
+        // to be larger
+        [ViewVariables]
+        [DataField("lowerWarnAround")]
+        public float? LowerWarningPercentage { get; private set; }
+
+        [ViewVariables]
+        public float? UpperWarningBound
+        {
+            get => CalculateWarningBound(AtmosMonitorThresholdBound.Upper);
+        }
+
+        [ViewVariables]
+        public float? LowerWarningBound
+        {
+            get => CalculateWarningBound(AtmosMonitorThresholdBound.Lower);
+        }
+
+        void ISerializationHooks.AfterDeserialization()
+        {
+            if (UpperBound <= LowerBound)
+                UpperBound = null;
+
+            if (LowerBound >= UpperBound)
+                LowerBound = null;
+
+            if (UpperWarningPercentage != null)
+                TrySetWarningBound(AtmosMonitorThresholdBound.Upper, UpperBound * UpperWarningPercentage);
+
+            if (LowerWarningPercentage != null)
+                TrySetWarningBound(AtmosMonitorThresholdBound.Lower, LowerBound * LowerWarningPercentage);
+        }
+
+        // utility function to check a threshold against some calculated value
+        public bool CheckThreshold(float value, out AtmosMonitorAlarmType state)
+        {
+            state = AtmosMonitorAlarmType.Normal;
+            if (Ignore) return false;
+
+            if (value >= UpperBound || value <= LowerBound)
+            {
+                state = AtmosMonitorAlarmType.Danger;
+                return true;
+            }
+            if (value >= UpperWarningBound || value <= LowerWarningBound)
+            {
+                state = AtmosMonitorAlarmType.Warning;
+                return true;
+            }
+
+            return false;
+        }
+
+        // set the primary bound, takes a hard value
+        public bool TrySetPrimaryBound(AtmosMonitorThresholdBound bound, float? input)
+        {
+            if (input == null)
+            {
+                switch (bound)
+                {
+                    case AtmosMonitorThresholdBound.Upper:
+                        UpperBound = null;
+                        break;
+                    case AtmosMonitorThresholdBound.Lower:
+                        LowerBound = null;
+                        break;
+                }
+
+                return true;
+            }
+
+            float value = (float) input;
+
+            if (value <= 0f || float.IsNaN(value))
+                return false;
+
+            (float target, int compare)? targetValue = null;
+            switch (bound)
+            {
+                case AtmosMonitorThresholdBound.Upper:
+                    if (float.IsPositiveInfinity(value))
+                        return false;
+
+                    if (LowerBound != null)
+                        targetValue = ((float) LowerBound, -1);
+                    break;
+                case AtmosMonitorThresholdBound.Lower:
+                    if (float.IsNegativeInfinity(value))
+                        return false;
+
+                    if (UpperBound != null)
+                        targetValue = ((float) UpperBound, 1);
+                    break;
+            }
+
+            bool isValid = true;
+            if (targetValue != null)
+            {
+                var result = targetValue.Value.target.CompareTo(value);
+                isValid = targetValue.Value.compare == result;
+            }
+
+            if (isValid)
+            {
+                switch (bound)
+                {
+                    case AtmosMonitorThresholdBound.Upper:
+                        UpperBound = value;
+                        return true;
+                    case AtmosMonitorThresholdBound.Lower:
+                        LowerBound = value;
+                        return true;
+                }
+            }
+
+            return false;
+        }
+
+        // set the warning bound, takes a hard value
+        //
+        // this will always set the percentage and
+        // the raw value at the same time
+        public bool TrySetWarningBound(AtmosMonitorThresholdBound bound, float? input)
+        {
+            if (input == null)
+            {
+                switch (bound)
+                {
+                    case AtmosMonitorThresholdBound.Upper:
+                        UpperWarningPercentage = null;
+                        break;
+                    case AtmosMonitorThresholdBound.Lower:
+                        LowerWarningPercentage = null;
+                        break;
+                }
+
+                return true;
+            }
+
+            switch (bound)
+            {
+                case AtmosMonitorThresholdBound.Upper:
+                    if (UpperBound == null)
+                        return false;
+
+                    float upperWarning = (float) (input / UpperBound);
+                    float upperTestValue = (upperWarning * (float) UpperBound);
+
+                    if (upperWarning > 1f
+                        || upperTestValue < LowerWarningBound
+                        || upperTestValue < LowerBound)
+                        return false;
+
+                    UpperWarningPercentage = upperWarning;
+
+                    return true;
+                case AtmosMonitorThresholdBound.Lower:
+                    if (LowerBound == null)
+                        return false;
+
+                    float lowerWarning = (float) (input / LowerBound);
+                    float testValue = (lowerWarning * (float) LowerBound);
+
+                    if (lowerWarning < 1f
+                        || testValue > UpperWarningBound
+                        || testValue > UpperBound)
+                        return false;
+
+                    LowerWarningPercentage = lowerWarning;
+
+                    return true;
+            }
+
+            return false;
+        }
+
+        public float? CalculateWarningBound(AtmosMonitorThresholdBound bound)
+        {
+            float? value = null;
+
+            switch (bound)
+            {
+                case AtmosMonitorThresholdBound.Upper:
+                    if (UpperBound == null || UpperWarningPercentage == null)
+                        break;
+
+                    value = UpperBound * UpperWarningPercentage;
+                    break;
+                case AtmosMonitorThresholdBound.Lower:
+                    if (LowerBound == null || LowerWarningPercentage == null)
+                        break;
+
+                    value = LowerBound * LowerWarningPercentage;
+                    break;
+            }
+
+            return value;
+        }
+    }
+
+    public enum AtmosMonitorThresholdBound
+    {
+        Upper,
+        Lower
+    }
+
+    // not really used in the prototype but in code,
+    // to differentiate between the different
+    // fields you can find this prototype in
+    public enum AtmosMonitorThresholdType
+    {
+        Temperature,
+        Pressure,
+        Gas
+    }
+}
diff --git a/Content.Shared/Atmos/Monitor/AtmosMonitorAlarmType.cs b/Content.Shared/Atmos/Monitor/AtmosMonitorAlarmType.cs
new file mode 100644
index 0000000000..8da1a04e67
--- /dev/null
+++ b/Content.Shared/Atmos/Monitor/AtmosMonitorAlarmType.cs
@@ -0,0 +1,13 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Atmos.Monitor
+{
+    [Serializable, NetSerializable]
+    public enum AtmosMonitorAlarmType : sbyte
+    {
+        Normal = 0,
+        Warning = 1,
+        Danger = 2 // 1 << 1 is the exact same thing and we're not really doing **bitmasking** are we?
+    }
+}
diff --git a/Content.Shared/Atmos/Monitor/Components/SharedAirAlarmComponent.cs b/Content.Shared/Atmos/Monitor/Components/SharedAirAlarmComponent.cs
new file mode 100644
index 0000000000..97bb4e41c9
--- /dev/null
+++ b/Content.Shared/Atmos/Monitor/Components/SharedAirAlarmComponent.cs
@@ -0,0 +1,135 @@
+using System;
+using System.Collections.Generic;
+using Content.Shared.Atmos;
+using Content.Shared.Atmos.Monitor;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Atmos.Monitor.Components
+{
+    [Serializable, NetSerializable]
+    public enum SharedAirAlarmInterfaceKey
+    {
+        Key
+    }
+
+    [Serializable, NetSerializable]
+    public enum AirAlarmMode
+    {
+        None,
+        Filtering,
+        Fill,
+        Panic,
+        Replace
+    }
+
+    [Serializable, NetSerializable]
+    public enum AirAlarmWireStatus
+    {
+        Power,
+        Access,
+        Panic,
+        DeviceSync
+    }
+
+    [Serializable, NetSerializable]
+    public readonly struct AirAlarmAirData
+    {
+        public readonly float? Pressure { get; }
+        public readonly float? Temperature { get; }
+        public readonly float? TotalMoles { get; }
+        public readonly AtmosMonitorAlarmType AlarmState { get; }
+
+        private readonly Dictionary<Gas, float>? _gases;
+        public readonly IReadOnlyDictionary<Gas, float>? Gases { get => _gases; }
+
+        public AirAlarmAirData(float? pressure, float? temperature, float? moles, AtmosMonitorAlarmType state, Dictionary<Gas, float>? gases)
+        {
+            Pressure = pressure;
+            Temperature = temperature;
+            TotalMoles = moles;
+            AlarmState = state;
+            _gases = gases;
+        }
+    }
+
+    public interface IAtmosDeviceData
+    {
+        public bool Enabled { get; set; }
+        public bool Dirty { get; set; }
+        public bool IgnoreAlarms { get; set; }
+    }
+
+    // would be nice to include the entire state here
+    // but it's already handled by messages
+    [Serializable, NetSerializable]
+    public class AirAlarmUIState : BoundUserInterfaceState
+    {}
+
+    [Serializable, NetSerializable]
+    public class AirAlarmResyncAllDevicesMessage : BoundUserInterfaceMessage
+    {}
+
+    [Serializable, NetSerializable]
+    public class AirAlarmSetAddressMessage : BoundUserInterfaceMessage
+    {
+        public string Address { get; }
+
+        public AirAlarmSetAddressMessage(string address)
+        {
+            Address = address;
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public class AirAlarmUpdateAirDataMessage : BoundUserInterfaceMessage
+    {
+        public AirAlarmAirData AirData;
+
+        public AirAlarmUpdateAirDataMessage(AirAlarmAirData airData)
+        {
+            AirData = airData;
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public class AirAlarmUpdateAlarmModeMessage : BoundUserInterfaceMessage
+    {
+        public AirAlarmMode Mode { get; }
+
+        public AirAlarmUpdateAlarmModeMessage(AirAlarmMode mode)
+        {
+            Mode = mode;
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public class AirAlarmUpdateDeviceDataMessage : BoundUserInterfaceMessage
+    {
+        public string Address { get; }
+        public IAtmosDeviceData Data { get; }
+
+        public AirAlarmUpdateDeviceDataMessage(string addr, IAtmosDeviceData data)
+        {
+            Address = addr;
+            Data = data;
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public class AirAlarmUpdateAlarmThresholdMessage : BoundUserInterfaceMessage
+    {
+        public AtmosAlarmThreshold Threshold { get; }
+        public AtmosMonitorThresholdType Type { get; }
+        public Gas? Gas { get; }
+
+        public AirAlarmUpdateAlarmThresholdMessage(AtmosMonitorThresholdType type, AtmosAlarmThreshold threshold, Gas? gas = null)
+        {
+            Threshold = threshold;
+            Type = type;
+            Gas = gas;
+        }
+    }
+
+
+}
diff --git a/Content.Shared/Atmos/Monitor/Components/SharedFireAlarmComponent.cs b/Content.Shared/Atmos/Monitor/Components/SharedFireAlarmComponent.cs
new file mode 100644
index 0000000000..242d0e2124
--- /dev/null
+++ b/Content.Shared/Atmos/Monitor/Components/SharedFireAlarmComponent.cs
@@ -0,0 +1,12 @@
+using System;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Atmos.Monitor.Components
+{
+    [Serializable, NetSerializable]
+    public enum FireAlarmWireStatus
+    {
+        Power,
+        Alarm
+    }
+}
diff --git a/Content.Shared/Atmos/Piping/Unary/Components/SharedVentPumpComponent.cs b/Content.Shared/Atmos/Piping/Unary/Components/SharedVentPumpComponent.cs
new file mode 100644
index 0000000000..c19df1bec4
--- /dev/null
+++ b/Content.Shared/Atmos/Piping/Unary/Components/SharedVentPumpComponent.cs
@@ -0,0 +1,77 @@
+using System;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Atmos.Piping.Unary.Components
+{
+    [Serializable, NetSerializable]
+    public class GasVentPumpData : IAtmosDeviceData
+    {
+        public bool Enabled { get; set; }
+        public bool Dirty { get; set; }
+        public bool IgnoreAlarms { get; set; } = false;
+        public VentPumpDirection? PumpDirection { get; set; }
+        public VentPressureBound? PressureChecks { get; set; }
+        public float? ExternalPressureBound { get; set; }
+        public float? InternalPressureBound { get; set; }
+
+        // Presets for 'dumb' air alarm modes
+
+        public static GasVentPumpData FilterModePreset = new GasVentPumpData
+        {
+            Enabled = true,
+            PumpDirection = VentPumpDirection.Releasing,
+            PressureChecks = VentPressureBound.ExternalBound,
+            ExternalPressureBound = Atmospherics.OneAtmosphere,
+            InternalPressureBound = 0f
+        };
+
+        public static GasVentPumpData FillModePreset = new GasVentPumpData
+        {
+            Enabled = true,
+            Dirty = true,
+            PumpDirection = VentPumpDirection.Releasing,
+            PressureChecks = VentPressureBound.ExternalBound,
+            ExternalPressureBound = Atmospherics.OneAtmosphere * 50,
+            InternalPressureBound = 0f
+        };
+
+        public static GasVentPumpData PanicModePreset = new GasVentPumpData
+        {
+            Enabled = false,
+            Dirty = true,
+            PumpDirection = VentPumpDirection.Releasing,
+            PressureChecks = VentPressureBound.ExternalBound,
+            ExternalPressureBound = Atmospherics.OneAtmosphere,
+            InternalPressureBound = 0f
+        };
+
+        public static GasVentPumpData Default()
+        {
+            return new GasVentPumpData
+            {
+                Enabled = true,
+                PumpDirection = VentPumpDirection.Releasing,
+                PressureChecks = VentPressureBound.ExternalBound,
+                ExternalPressureBound = Atmospherics.OneAtmosphere,
+                InternalPressureBound = 0f
+            };
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public enum VentPumpDirection : sbyte
+    {
+        Siphoning = 0,
+        Releasing = 1,
+    }
+
+    [Flags]
+    [Serializable, NetSerializable]
+    public enum VentPressureBound : sbyte
+    {
+        NoBound       = 0,
+        InternalBound = 1,
+        ExternalBound = 2,
+    }
+}
diff --git a/Content.Shared/Atmos/Piping/Unary/Components/SharedVentScrubberComponent.cs b/Content.Shared/Atmos/Piping/Unary/Components/SharedVentScrubberComponent.cs
new file mode 100644
index 0000000000..7cb1eba53a
--- /dev/null
+++ b/Content.Shared/Atmos/Piping/Unary/Components/SharedVentScrubberComponent.cs
@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using Content.Shared.Atmos.Monitor.Components;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Atmos.Piping.Unary.Components
+{
+    [Serializable, NetSerializable]
+    public class GasVentScrubberData : IAtmosDeviceData
+    {
+        public bool Enabled { get; set; }
+        public bool Dirty { get; set; }
+        public bool IgnoreAlarms { get; set; } = false;
+        public HashSet<Gas>? FilterGases { get; set; }
+        public ScrubberPumpDirection? PumpDirection { get; set; }
+        public float? VolumeRate { get; set; }
+        public bool WideNet { get; set; }
+
+        public static HashSet<Gas> DefaultFilterGases = new()
+        {
+            Gas.CarbonDioxide,
+            Gas.Plasma,
+            Gas.Tritium,
+            Gas.WaterVapor,
+        };
+
+        // Presets for 'dumb' air alarm modes
+
+        public static GasVentScrubberData FilterModePreset = new GasVentScrubberData
+        {
+            Enabled = true,
+            FilterGases = GasVentScrubberData.DefaultFilterGases,
+            PumpDirection = ScrubberPumpDirection.Scrubbing,
+            VolumeRate = 200f,
+            WideNet = false
+        };
+
+        public static GasVentScrubberData FillModePreset = new GasVentScrubberData
+        {
+            Enabled = false,
+            Dirty = true,
+            FilterGases = GasVentScrubberData.DefaultFilterGases,
+            PumpDirection = ScrubberPumpDirection.Scrubbing,
+            VolumeRate = 200f,
+            WideNet = false
+        };
+
+        public static GasVentScrubberData PanicModePreset = new GasVentScrubberData
+        {
+            Enabled = true,
+            Dirty = true,
+            FilterGases = GasVentScrubberData.DefaultFilterGases,
+            PumpDirection = ScrubberPumpDirection.Siphoning,
+            VolumeRate = 200f,
+            WideNet = false
+        };
+
+        public static GasVentScrubberData Default()
+        {
+            return new GasVentScrubberData
+            {
+                Enabled = true,
+                FilterGases = GasVentScrubberData.DefaultFilterGases,
+                PumpDirection = ScrubberPumpDirection.Scrubbing,
+                VolumeRate = 200f,
+                WideNet = false
+            };
+        }
+    }
+
+    [Serializable, NetSerializable]
+    public enum ScrubberPumpDirection : sbyte
+    {
+        Siphoning = 0,
+        Scrubbing = 1,
+    }
+}
diff --git a/Resources/Audio/Machines/alarm.ogg b/Resources/Audio/Machines/alarm.ogg
index 2aec35bd32..cc543b444e 100644
Binary files a/Resources/Audio/Machines/alarm.ogg and b/Resources/Audio/Machines/alarm.ogg differ
diff --git a/Resources/Locale/en-US/atmos/air-alarm-ui.ftl b/Resources/Locale/en-US/atmos/air-alarm-ui.ftl
new file mode 100644
index 0000000000..6428a85cda
--- /dev/null
+++ b/Resources/Locale/en-US/atmos/air-alarm-ui.ftl
@@ -0,0 +1,57 @@
+# UI
+
+## Window
+
+air-alarm-ui-access-denied = Insufficient access!
+
+air-alarm-ui-window-pressure-label = Pressure
+air-alarm-ui-window-temperature-label = Temperature
+air-alarm-ui-window-alarm-state-label = Status
+
+air-alarm-ui-window-address-label = Address
+air-alarm-ui-window-device-count-label = Total Devices
+air-alarm-ui-window-resync-devices-label = Resync
+
+air-alarm-ui-window-mode-label = Mode
+
+air-alarm-ui-window-pressure = {$pressure} kPa
+air-alarm-ui-window-temperature = {$tempC} C ({$temperature} K)
+air-alarm-ui-window-alarm-state = {$state}
+
+air-alarm-ui-window-tab-gas = Gases
+air-alarm-ui-window-tab-vents = Vents
+air-alarm-ui-window-tab-scrubbers = Scrubbers
+air-alarm-ui-window-tab-thresholds = Thresholds
+
+air-alarm-ui-gases = {$gas}: {$amount} mol ({$percentage}%)
+
+## Widgets
+
+### General
+
+air-alarm-ui-widget-enable = Enabled
+air-alarm-ui-widget-ignore = Ignore
+air-alarm-ui-atmos-net-device-label = Address: {$address}
+
+### Vent pumps
+
+air-alarm-ui-vent-pump-label = Vent direction
+air-alarm-ui-vent-pressure-label = Pressure bound
+air-alarm-ui-vent-external-bound-label = External bound
+air-alarm-ui-vent-internal-bound-label = Internal bound
+
+### Scrubbers
+
+air-alarm-ui-scrubber-pump-direction-label = Direction
+air-alarm-ui-scrubber-volume-rate-label = Rate (L)
+air-alarm-ui-scrubber-wide-net-label = WideNet
+
+### Thresholds
+
+air-alarm-ui-thresholds-pressure-title = Pressure (kPa)
+air-alarm-ui-thresholds-temperature-title = Temperature (K)
+air-alarm-ui-thresholds-gas-title = {$gas} (%)
+air-alarm-ui-thresholds-upper-bound = Upper bound
+air-alarm-ui-thresholds-lower-bound = Lower bound
+air-alarm-ui-thresholds-upper-warning-bound = Upper warning bound
+air-alarm-ui-thresholds-lower-warning-bound = Lower warning bound
diff --git a/Resources/Prototypes/Atmospherics/thresholds.yml b/Resources/Prototypes/Atmospherics/thresholds.yml
new file mode 100644
index 0000000000..ec3466f52c
--- /dev/null
+++ b/Resources/Prototypes/Atmospherics/thresholds.yml
@@ -0,0 +1,31 @@
+- type: alarmThreshold
+  id: stationTemperature
+  upperBound: 1465.75 # T20C * 5
+  lowerBound: 193.15 # T20C - 100
+  upperWarnAround: 0.25
+  lowerWarnAround: 1.1
+
+- type: alarmThreshold
+  id: stationPressure
+  upperBound: 550 # as defined in Atmospherics.cs
+  lowerBound: 20 # as defined in Atmospherics.cs
+  upperWarnAround: 0.7
+  lowerWarnAround: 2.5
+
+- type: alarmThreshold
+  id: stationOxygen
+  lowerBound: 0.0010
+  lowerWarnAround: 1.5
+
+- type: alarmThreshold
+  id: stationCO2
+  upperBound: 0.0025
+  upperWarnAround: 0.5
+
+- type: alarmThreshold
+  id: ignore # just ignore nitrogen??? ??? ???
+  ignore: true
+
+- type: alarmThreshold
+  id: danger # just any gas you don't want at all
+  upperBound: 0.0001
diff --git a/Resources/Prototypes/Entities/Objects/Devices/Electronics/atmos_alarms.yml b/Resources/Prototypes/Entities/Objects/Devices/Electronics/atmos_alarms.yml
new file mode 100644
index 0000000000..b6bd2f45af
--- /dev/null
+++ b/Resources/Prototypes/Entities/Objects/Devices/Electronics/atmos_alarms.yml
@@ -0,0 +1,23 @@
+- type: entity
+  id: AirAlarmElectronics
+  parent: BaseItem
+  name: air alarm electronics
+  components:
+  - type: Tag
+    tags:
+    - AirAlarmElectronics
+  - type: Sprite
+    sprite: Objects/Misc/module.rsi
+    state: door_electronics
+
+- type: entity
+  id: FireAlarmElectronics
+  parent: BaseItem
+  name: fire alarm electronics
+  components:
+  - type: Tag
+    tags:
+    - FireAlarmElectronics
+  - type: Sprite
+    sprite: Objects/Misc/module.rsi
+    state: door_electronics
diff --git a/Resources/Prototypes/Entities/Structures/Doors/Firelocks/firelock.yml b/Resources/Prototypes/Entities/Structures/Doors/Firelocks/firelock.yml
index bc96f2309c..98a15a73a7 100644
--- a/Resources/Prototypes/Entities/Structures/Doors/Firelocks/firelock.yml
+++ b/Resources/Prototypes/Entities/Structures/Doors/Firelocks/firelock.yml
@@ -4,6 +4,16 @@
   name: firelock
   description: Apply crowbar.
   components:
+    - type: AtmosAlarmable
+      alarmedBy:
+      - FireAlarm
+      - AirAlarm
+    - type: ApcPowerReceiver
+    - type: ExtensionCableReceiver
+    - type: DeviceNetworkComponent
+      deviceNetId: Apc
+      frequency: 1621
+    - type: ApcNetworkConnection
     - type: InteractionOutline
     - type: Damageable
       damageContainer: Inorganic
diff --git a/Resources/Prototypes/Entities/Structures/Piping/Atmospherics/unary.yml b/Resources/Prototypes/Entities/Structures/Piping/Atmospherics/unary.yml
index 1d3686e087..2fb387dd5d 100644
--- a/Resources/Prototypes/Entities/Structures/Piping/Atmospherics/unary.yml
+++ b/Resources/Prototypes/Entities/Structures/Piping/Atmospherics/unary.yml
@@ -21,6 +21,15 @@
   placement:
     mode: SnapgridCenter
   components:
+    - type: ApcPowerReceiver
+    - type: ExtensionCableReceiver
+    - type: DeviceNetworkComponent
+      deviceNetId: Apc
+      frequency: 1621
+    - type: ApcNetworkConnection
+    - type: AtmosAlarmable
+      alarmedBy:
+      - AirAlarm
     - type: Sprite
       netsync: false
       drawdepth: FloorObjects
@@ -73,6 +82,15 @@
   placement:
     mode: SnapgridCenter
   components:
+    - type: ApcPowerReceiver
+    - type: ExtensionCableReceiver
+    - type: DeviceNetworkComponent
+      deviceNetId: Apc
+      frequency: 1621
+    - type: ApcNetworkConnection
+    - type: AtmosAlarmable
+      alarmedBy:
+      - AirAlarm
     - type: Sprite
       netsync: false
       drawdepth: FloorObjects
diff --git a/Resources/Prototypes/Entities/Structures/Wallmounts/air_alarm.yml b/Resources/Prototypes/Entities/Structures/Wallmounts/air_alarm.yml
new file mode 100644
index 0000000000..6a327bd0f4
--- /dev/null
+++ b/Resources/Prototypes/Entities/Structures/Wallmounts/air_alarm.yml
@@ -0,0 +1,90 @@
+- type: entity
+  id: AirAlarm
+  name: air alarm
+  description: An air alarm. Alarms... air?
+  components:
+  - type: ApcPowerReceiver
+  - type: ExtensionCableReceiver
+  - type: DeviceNetworkComponent
+    deviceNetId: Apc
+    frequency: 1621
+  - type: ApcNetworkConnection
+  - type: AtmosMonitor
+    temperatureThreshold: stationTemperature
+    pressureThreshold: stationPressure
+    gasThresholds:
+      Oxygen: stationOxygen
+      Nitrogen: ignore
+      CarbonDioxide: stationCO2
+      Plasma: danger # everything below is usually bad
+      Tritium: danger
+      WaterVapor: danger
+  - type: AtmosAlarmable
+    alarmedBy: ["AirAlarm"]
+  - type: AtmosDevice
+  - type: AirAlarm
+  - type: Clickable
+  - type: InteractionOutline
+  - type: UserInterface
+    interfaces:
+    - key: enum.SharedAirAlarmInterfaceKey.Key
+      type: AirAlarmBoundUserInterface
+    - key: enum.WiresUiKey.Key
+      type: WiresBoundUserInterface
+  - type: Wires
+    BoardName: "Air Alarm"
+    LayoutId: AirAlarm
+  - type: Physics
+  - type: Fixtures
+    fixtures:
+    - shape:
+        !type:PhysShapeAabb
+          bounds: "-0.25,-0.25,0.3,0.25"
+      layer: [ Passable ]
+  - type: AccessReader
+    access: [["Engineering"]]
+  - type: Appearance
+    visuals:
+    - type: AtmosMonitorVisualizer
+      layerMap: "airAlarmBase"
+      alarmStates:
+        Normal: alarm0
+        Warning: alarm2
+        Danger: alarm1
+      setOnDepowered:
+        airAlarmBase: alarmp
+    - type: WiresVisualizer
+  - type: Sprite
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    layers:
+    - state: alarm0
+      map: ["airAlarmBase"] # TODO: fire alarm enum
+    - state: alarmx
+      map: ["enum.WiresVisualLayers.MaintenancePanel"]
+  - type: Transform
+    anchored: true
+  - type: Construction
+    graph: air_alarm
+    node: air_alarm
+  placement:
+    mode: SnapgridCenter
+    snap:
+    - Wallmount
+
+- type: entity
+  id: AirAlarmAssembly
+  name: air alarm assembly
+  description: An air alarm. Doesn't look like it'll be alarming air any time soon.
+  components:
+  - type: Clickable
+  - type: InteractionOutline
+  - type: Sprite
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    state: alarm_b1
+  - type: Construction
+    graph: air_alarm
+    node: assembly
+  placement:
+    mode: SnapgridCenter
+    snap:
+    - Wallmount
diff --git a/Resources/Prototypes/Entities/Structures/Wallmounts/fire_alarm.yml b/Resources/Prototypes/Entities/Structures/Wallmounts/fire_alarm.yml
new file mode 100644
index 0000000000..52e0fb1a4a
--- /dev/null
+++ b/Resources/Prototypes/Entities/Structures/Wallmounts/fire_alarm.yml
@@ -0,0 +1,73 @@
+- type: entity
+  id: FireAlarm
+  name: fire alarm
+  description: A fire alarm. Spicy!
+  components:
+  - type: ApcPowerReceiver
+  - type: ExtensionCableReceiver
+  - type: DeviceNetworkComponent
+    deviceNetId: Apc
+    frequency: 1621
+  - type: ApcNetworkConnection
+  - type: AtmosMonitor
+    monitorFire: true
+    displayMaxAlarmInNet: true
+  - type: AtmosDevice
+  - type: AtmosAlarmable
+    alarmedBy: ["FireAlarm"] # alarm itself, network effect
+  - type: Clickable
+  - type: InteractionOutline
+  - type: FireAlarm
+  - type: Appearance
+    visuals:
+    - type: AtmosMonitorVisualizer
+      layerMap: "fireAlarmState"
+      alarmStates:
+        Normal: fire_off
+        Warning: fire_off # shouldn't be alarming at a warning
+        Danger: fire_on
+      hideOnDepowered: ["fireAlarmState"]
+    - type: WiresVisualizer
+  - type: UserInterface
+    interfaces:
+    - key: enum.WiresUiKey.Key
+      type: WiresBoundUserInterface
+  - type: Wires
+    BoardName: "Fire Alarm"
+    LayoutId: FireAlarm
+  - type: Sprite
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    layers:
+    - state: fire0
+      map: ["fireAlarmBase"]
+    - state: fire_off
+      map: ["fireAlarmState"]
+    - state: fire_b2
+      map: ["enum.WiresVisualLayers.MaintenancePanel"]
+  - type: Transform
+    anchored: true
+  - type: Construction
+    graph: fire_alarm
+    node: fire_alarm
+  placement:
+    mode: SnapgridCenter
+    snap:
+    - Wallmount
+
+- type: entity
+  id: FireAlarmAssembly
+  name: fire alarm assembly
+  description: A fire alarm assembly. Very mild.
+  components:
+  - type: Clickable
+  - type: InteractionOutline
+  - type: Sprite
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    state: fire_b1
+  - type: Construction
+    graph: fire_alarm
+    node: assembly
+  placement:
+    mode: SnapgridCenter
+    snap:
+    - Wallmount
diff --git a/Resources/Prototypes/Recipes/Construction/Graphs/air_alarms.yml b/Resources/Prototypes/Recipes/Construction/Graphs/air_alarms.yml
new file mode 100644
index 0000000000..098a110a19
--- /dev/null
+++ b/Resources/Prototypes/Recipes/Construction/Graphs/air_alarms.yml
@@ -0,0 +1,157 @@
+- type: constructionGraph
+  id: air_alarm
+  start: start
+  graph:
+  - node: start
+    edges:
+    - to: assembly
+      steps:
+      - material: Steel
+        amount: 2
+        doAfter: 2.0
+
+  - node: assembly
+    entity: AirAlarmAssembly
+    actions:
+    - !type:SpriteStateChange
+      state: alarm_b1
+    edges:
+    - to: wired
+      steps:
+      - material: Cable
+        amount: 2
+        doAfter: 1
+    - to: start
+      completed:
+      - !type:SpawnPrototype
+        prototype: SheetSteel1
+        amount: 2
+      - !type:DeleteEntity {}
+      steps:
+      - tool: Welding
+        doAfter: 2
+
+  - node: wired
+    entity: AirAlarmAssembly
+    edges:
+    - to: electronics
+      steps:
+      - tag: AirAlarmElectronics
+        store: board
+        name: "air alarm electronics"
+        icon:
+          sprite: "Objects/Misc/module.rsi"
+          state: "door_electronics" # /tg/ uses the same sprite, right?
+        doAfter: 1
+    - to: assembly
+      completed:
+      - !type:SpawnPrototype
+        prototype: CableApcStack1
+        amount: 2
+      steps:
+      - tool: Cutting
+        doAfter: 1
+
+  - node: electronics
+    actions:
+    - !type:SpriteStateChange
+      state: alarm_b2
+    edges:
+    - to: air_alarm
+      steps:
+      - tool: Screwing
+        doAfter: 2
+
+  - node: air_alarm
+    entity: AirAlarm
+    edges:
+    - to: wired
+      conditions:
+      - !type:AllWiresCut {}
+      - !type:WirePanel {}
+      - !type:ContainerNotEmpty
+        container: board
+      completed:
+      - !type:EmptyAllContainers {}
+      steps:
+      - tool: Prying
+        doAfter: 1
+
+- type: constructionGraph
+  id: fire_alarm
+  start: start
+  graph:
+  - node: start
+    edges:
+    - to: assembly
+      steps:
+      - material: Steel
+        amount: 2
+        doAfter: 2.0
+
+  - node: assembly
+    entity: FireAlarmAssembly
+    actions:
+    - !type:SpriteStateChange
+      state: fire_b1
+    edges:
+    - to: wired
+      steps:
+      - material: Cable
+        amount: 2
+        doAfter: 1
+    - to: start
+      completed:
+      - !type:SpawnPrototype
+        prototype: SheetSteel1
+        amount: 2
+      - !type:DeleteEntity {}
+      steps:
+      - tool: Welding
+        doAfter: 2
+
+  - node: wired
+    entity: FireAlarmAssembly
+    edges:
+    - to: electronics
+      steps:
+      - tag: FireAlarmElectronics
+        store: board
+        name: "fire alarm electronics"
+        icon:
+          sprite: "Objects/Misc/module.rsi"
+          state: "door_electronics" # /tg/ uses the same sprite, right?
+        doAfter: 1
+    - to: assembly
+      completed:
+      - !type:SpawnPrototype
+        prototype: CableApcStack1
+        amount: 2
+      steps:
+      - tool: Cutting
+        doAfter: 1
+
+  - node: electronics
+    actions:
+    - !type:SpriteStateChange
+      state: fire_b2
+    edges:
+    - to: fire_alarm
+      steps:
+      - tool: Screwing
+        doAfter: 2
+
+  - node: fire_alarm
+    entity: FireAlarm
+    edges:
+    - to: wired
+      conditions:
+      - !type:AllWiresCut {}
+      - !type:WirePanel {}
+      - !type:ContainerNotEmpty
+        container: board
+      completed:
+      - !type:EmptyAllContainers {}
+      steps:
+      - tool: Prying
+        doAfter: 1
diff --git a/Resources/Prototypes/Recipes/Construction/atmos_alarms.yml b/Resources/Prototypes/Recipes/Construction/atmos_alarms.yml
new file mode 100644
index 0000000000..32c19c1450
--- /dev/null
+++ b/Resources/Prototypes/Recipes/Construction/atmos_alarms.yml
@@ -0,0 +1,35 @@
+- type: construction
+  name: air alarm
+  id: AirAlarmFixture
+  graph: air_alarm
+  startNode: start
+  targetNode: air_alarm
+  category: Structures
+  description: An air alarm. Alarms... air?
+  icon:
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    state: alarm0
+  placementMode: SnapgridCenter
+  objectType: Structure
+  canRotate: true
+  canBuildInImpassable: true
+  conditions:
+  - !type:WallmountCondition {}
+
+- type: construction
+  name: fire alarm
+  id: FireAlarm
+  graph: fire_alarm
+  startNode: start
+  targetNode: fire_alarm
+  category: Structures
+  description: A fire alarm. Spicy!
+  icon:
+    sprite: Structures/Wallmounts/air_monitors.rsi
+    state: fire0
+  placementMode: SnapgridCenter
+  objectType: Structure
+  canRotate: true
+  canBuildInImpassable: true
+  conditions:
+  - !type:WallmountCondition {}
diff --git a/Resources/Prototypes/tags.yml b/Resources/Prototypes/tags.yml
index 715c2fd401..a73a9863fe 100644
--- a/Resources/Prototypes/tags.yml
+++ b/Resources/Prototypes/tags.yml
@@ -1,5 +1,8 @@
 # Alphabetical order is now apparently required.
 
+- type: Tag
+  id: AirAlarmElectronics
+
 - type: Tag
   id: Baguette
 
@@ -108,6 +111,9 @@
 - type: Tag
   id: ExplosivePassable
 
+- type: Tag
+  id: FireAlarmElectronics
+
 - type: Tag
   id: FireAxe
 
diff --git a/Resources/Textures/Structures/Wallmounts/air_monitors.rsi/alarm0.png b/Resources/Textures/Structures/Wallmounts/air_monitors.rsi/alarm0.png
new file mode 100644
index 0000000000..3b714153de
Binary files /dev/null and b/Resources/Textures/Structures/Wallmounts/air_monitors.rsi/alarm0.png differ
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+++ b/Resources/Textures/Structures/Wallmounts/air_monitors.rsi/meta.json
@@ -0,0 +1 @@
+{"version": 1, "size": {"x": 32, "y": 32}, "states": [{"name": "alarm0", "directions": 4, "delays": [[0.5, 0.1, 0.1, 1.0, 0.2, 0.1], [0.5, 0.1, 0.1, 1.0, 0.2, 0.1], [0.5, 0.1, 0.1, 1.0, 0.2, 0.1], [0.5, 0.1, 0.1, 1.0, 0.2, 0.1]]}, {"name": "alarm1", "directions": 4, "delays": [[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]}, {"name": "alarm2", "directions": 4, "delays": [[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]}, {"name": "alarm_b1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "alarm_b2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "alarm_bitem", "directions": 1, "delays": [[1.0]]}, {"name": "alarmp", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "alarmx", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "auth_off", "directions": 1, "delays": [[1.0]]}, {"name": "auth_on", "directions": 1, "delays": [[0.1, 0.1]]}, {"name": "fire0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_2", "directions": 4, "delays": [[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]}, {"name": "fire_3", "directions": 4, "delays": [[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]}, {"name": "fire_b0", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_b1", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_b2", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_bitem", "directions": 1, "delays": [[1.0]]}, {"name": "fire_detected", "directions": 4, "delays": [[0.4, 0.4], [0.4, 0.4], [0.4, 0.4], [0.4, 0.4]]}, {"name": "fire_emagged", "directions": 4, "delays": [[0.5, 0.5, 0.3, 0.5, 0.2, 0.5], [0.5, 0.5, 0.3, 0.5, 0.2, 0.5], [0.5, 0.5, 0.3, 0.5, 0.2, 0.5], [0.5, 0.5, 0.3, 0.5, 0.2, 0.5]]}, {"name": "fire_off", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "fire_on", "directions": 4, "delays": [[0.5, 0.5], [0.5, 0.5], [0.5, 0.5], [0.5, 0.5]]}, {"name": "fire_overlay", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}, {"name": "firex", "directions": 4, "delays": [[1.0], [1.0], [1.0], [1.0]]}]}
\ No newline at end of file