diff --git a/.gitignore b/.gitignore
index 739a60ab..36d84cbc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -390,3 +390,4 @@ MigrationBackup/
 FodyWeavers.xsd
 essentials-framework/Essentials Interfaces/PepperDash_Essentials_Interfaces/PepperDash_Essentials_Interfaces.csproj
 .DS_Store
+/._PepperDash.Essentials.sln
diff --git a/src/PepperDash.Essentials.Core/Devices/IVolumeAndAudioInterfaces.cs b/src/PepperDash.Essentials.Core/Devices/IVolumeAndAudioInterfaces.cs
index c8033b92..5d8e0724 100644
--- a/src/PepperDash.Essentials.Core/Devices/IVolumeAndAudioInterfaces.cs
+++ b/src/PepperDash.Essentials.Core/Devices/IVolumeAndAudioInterfaces.cs
@@ -64,6 +64,24 @@ namespace PepperDash.Essentials.Core
 		IntFeedback VolumeLevelFeedback { get; }
 	}
 
+	/// <summary>
+	/// Adds the ability to display a raw volume level and the units of that level
+	/// </summary>
+	public interface IBasicVolumeWithFeedbackAdvanced : IBasicVolumeWithFeedback
+	{
+		int RawVolumeLevel { get; }
+
+		eVolumeLevelUnits Units { get; }
+	}
+
+    public enum eVolumeLevelUnits
+    {
+        Decibels,
+        Percent,
+        Relative,
+        Absolute
+    }
+
     /// <summary>
     /// A class that implements this contains a reference to a current IBasicVolumeControls device.
     /// The class may have multiple IBasicVolumeControls.