diff --git a/UserInterface/Views/AddSensorDialog.axaml.cs b/UserInterface/Views/AddSensorDialog.axaml.cs
index 2669d1f..5d83bd7 100644
--- a/UserInterface/Views/AddSensorDialog.axaml.cs
+++ b/UserInterface/Views/AddSensorDialog.axaml.cs
@@ -102,6 +102,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.DummySensor:
                     item.Description = "This sensor spits out a random number every second. Useful for testing, maybe you'll find some other use for it.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#dummysensor";
@@ -109,6 +110,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 1;
                     break;
+                    
                 case AvailableSensors.CPULoadSensor:
                     item.Description = "This sensor checks the current CPU load. It averages the load on all logical cores every second and rounds the output to two decimals.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#cpuloadsensor";
@@ -116,6 +118,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.CurrentClockSpeedSensor:
                     item.Description = "This sensor returns the BIOS configured baseclock for the processor.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#currentclockspeedsensor";
@@ -123,6 +126,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 3600;
                     break;
+                    
                 case AvailableSensors.WMIQuerySensor:
                     item.Description = "This advanced sensor executes a user defined WMI query and exposes the result. The query should return a single value.";
                     item.MoreInfoLink = "https://github.com/sleevezipperhass-workstation-service/blob/master/documentation/WMIQuery.md#wmiquerysensor";
@@ -130,6 +134,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 10;
                     break;
+                    
                 case AvailableSensors.MemoryUsageSensor:
                     item.Description = "This sensor calculates the percentage of used memory.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#memoryusagesensorsensor";
@@ -137,6 +142,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 10;
                     break;
+                    
                 case AvailableSensors.ActiveWindowSensor:
                     item.Description = "This sensor exposes the name of the currently active window.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#activewindowsensor";
@@ -144,18 +150,21 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.WebcamActiveSensor:
                     item.Description = "This sensor shows if the webcam is currently being used.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#webcamactivesensor";
                     item.ShowQueryInput = false;
                     item.UpdateInterval = 10;
                     break;
+                    
                 case AvailableSensors.MicrophoneActiveSensor:
                     item.Description = "This sensor shows if the microphone is currently in use.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#microphoneactivesensor";
                     item.ShowQueryInput = false;
                     item.UpdateInterval = 10;
                     break;
+                    
                 case AvailableSensors.NamedWindowSensor:
                     item.Description = "This sensor returns true if a window was found with the name you search for. ";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#namedwindowsensor";
@@ -163,6 +172,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = true;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.LastActiveSensor:
                     item.Description = "This sensor returns the date/time that the workstation was last active.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#lastactivesensor";
@@ -170,6 +180,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.LastBootSensor:
                     item.Description = "This sensor returns the date/time that Windows was last booted";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#lastbootsensor";
@@ -177,6 +188,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.SessionStateSensor:
                     item.Description = "This sensor returns the state of the Windows session.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#sessionstatesensor";
@@ -184,6 +196,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.CurrentVolumeSensor:
                     item.Description = "This sensor returns the volume of currently playing audio.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#currentvolumesensor";
@@ -191,6 +204,15 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+               
+                case AvailableSensors.MasterVolumeSensor:
+                    item.Description = "This sensor returns the master volume of the currently selected default audio device as a percentage value.";
+                    item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#mastervolumesensor";
+                    item.ShowQueryInput = false;
+                    item.ShowWindowNameInput = false;
+                    item.UpdateInterval = 5;
+                    break;
+                    
                 case AvailableSensors.GPUTemperatureSensor:
                     item.Description = "This sensor returns the current temperature of the GPU in °C.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#gputemperaturesensor";
@@ -198,6 +220,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 case AvailableSensors.GPULoadSensor:
                     item.Description = "This sensor returns the current GPU load.";
                     item.MoreInfoLink = "https://github.com/sleevezipper/hass-workstation-service/blob/master/documentation/Sensors.md#gpuloadsensor";
@@ -205,6 +228,7 @@ namespace UserInterface.Views
                     item.ShowWindowNameInput = false;
                     item.UpdateInterval = 5;
                     break;
+                    
                 default:
                     item.Description = null;
                     item.MoreInfoLink = null;
@@ -219,4 +243,4 @@ namespace UserInterface.Views
             BrowserUtil.OpenBrowser(item.MoreInfoLink);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/documentation/Sensors.md b/documentation/Sensors.md
index fee136d..958efa8 100644
--- a/documentation/Sensors.md
+++ b/documentation/Sensors.md
@@ -20,6 +20,10 @@ The current clock speed sensor returns the base system clock as configured in th
 
 This sensor returns the current volume of playing audio. **It does not return the master volume.** If you have no sound playing the value will be 0.
 
+### MasterVolumeSensor
+
+This sensor returns the master volume for the currently selected default audio device.
+
 ###  DummySensor
 
 This sensor produces a random output every second, and is intended to test latency and connectivity.
diff --git a/hass-workstation-service/Communication/InterProcesCommunication/InterProcessApi.cs b/hass-workstation-service/Communication/InterProcesCommunication/InterProcessApi.cs
index 1dc8761..0a53b1a 100644
--- a/hass-workstation-service/Communication/InterProcesCommunication/InterProcessApi.cs
+++ b/hass-workstation-service/Communication/InterProcesCommunication/InterProcessApi.cs
@@ -185,6 +185,7 @@ namespace hass_workstation_service.Communication.InterProcesCommunication
                 AvailableSensors.CurrentVolumeSensor => new CurrentVolumeSensor(_publisher, (int)model.UpdateInterval, model.Name),
                 AvailableSensors.GPUTemperatureSensor => new GpuTemperatureSensor(_publisher, (int)model.UpdateInterval, model.Name),
                 AvailableSensors.GPULoadSensor => new GpuLoadSensor(_publisher, (int)model.UpdateInterval, model.Name),
+                AvailableSensors.MasterVolumeSensor => new MasterVolumeSensor(_publisher, (int)model.UpdateInterval, model.Name),
                 _ => null
             };
         }
diff --git a/hass-workstation-service/Communication/InterProcesCommunication/ServiceContractModels.cs b/hass-workstation-service/Communication/InterProcesCommunication/ServiceContractModels.cs
index 2ec85e5..0507e5e 100644
--- a/hass-workstation-service/Communication/InterProcesCommunication/ServiceContractModels.cs
+++ b/hass-workstation-service/Communication/InterProcesCommunication/ServiceContractModels.cs
@@ -100,6 +100,7 @@ namespace hass_workstation_service.Communication.InterProcesCommunication.Models
         LastBootSensor,
         SessionStateSensor,
         CurrentVolumeSensor,
+        MasterVolumeSensor,
         GPUTemperatureSensor,
         GPULoadSensor
     }
diff --git a/hass-workstation-service/Data/ConfigurationService.cs b/hass-workstation-service/Data/ConfigurationService.cs
index 8a67026..dc8e12f 100644
--- a/hass-workstation-service/Data/ConfigurationService.cs
+++ b/hass-workstation-service/Data/ConfigurationService.cs
@@ -138,6 +138,9 @@ namespace hass_workstation_service.Data
                     case "CurrentVolumeSensor":
                         sensor = new CurrentVolumeSensor(publisher, configuredSensor.UpdateInterval, configuredSensor.Name, configuredSensor.Id);
                         break;
+                    case "MasterVolumeSensor":
+                        sensor = new MasterVolumeSensor(publisher, configuredSensor.UpdateInterval, configuredSensor.Name, configuredSensor.Id);
+                        break;
                     case "GpuTemperatureSensor":
                         sensor = new GpuTemperatureSensor(publisher, configuredSensor.UpdateInterval, configuredSensor.Name, configuredSensor.Id);
                         break;
diff --git a/hass-workstation-service/Domain/Sensors/MasterVolumeSensor.cs b/hass-workstation-service/Domain/Sensors/MasterVolumeSensor.cs
new file mode 100644
index 0000000..699f9b5
--- /dev/null
+++ b/hass-workstation-service/Domain/Sensors/MasterVolumeSensor.cs
@@ -0,0 +1,41 @@
+using CoreAudio;
+using hass_workstation_service.Communication;
+using System;
+using System.Globalization;
+
+namespace hass_workstation_service.Domain.Sensors
+{
+    public class MasterVolumeSensor : AbstractSensor
+    {
+        private MMDeviceEnumerator deviceEnumerator;
+
+        public MasterVolumeSensor(MqttPublisher publisher, int? updateInterval = null, string name = "MasterVolume", Guid id = default(Guid)) : base(publisher, name ?? "CurrentVolume", updateInterval ?? 10, id)
+        {
+            this.deviceEnumerator = new MMDeviceEnumerator();
+        }
+        public override SensorDiscoveryConfigModel GetAutoDiscoveryConfig()
+        {
+            return this._autoDiscoveryConfigModel ?? SetAutoDiscoveryConfigModel(new SensorDiscoveryConfigModel()
+            {
+                Name = this.Name,
+                Unique_id = this.Id.ToString(),
+                Device = this.Publisher.DeviceConfigModel,
+                State_topic = $"homeassistant/{this.Domain}/{Publisher.DeviceConfigModel.Name}/{this.ObjectId}/state",
+                Icon = "mdi:volume-medium",
+                Unit_of_measurement = "%",
+                Availability_topic = $"homeassistant/{this.Domain}/{Publisher.DeviceConfigModel.Name}/availability"
+            });
+        }
+
+        public override string GetState()
+        {
+            var defaultAudioDevice = deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia);
+
+            // check if the volume is muted
+            if (defaultAudioDevice.AudioEndpointVolume.Mute) return "0";
+
+            return Math.Round(defaultAudioDevice.AudioEndpointVolume.MasterVolumeLevelScalar * 100, 0) // round volume and convert to percent
+                .ToString(CultureInfo.InvariantCulture); // convert to string
+        }
+    }
+}
\ No newline at end of file