diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IAudioZone.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IAudioZone.cs
index 593c2ea8..0ec65d79 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IAudioZone.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IAudioZone.cs
@@ -5,6 +5,10 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IAudioZone : IBasicVolumeWithFeedback
   {
+    /// <summary>
+    /// Selects the specified input
+    /// </summary>
+    /// <param name="input">The input to select</param>
     void SelectInput(ushort input);
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedback.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedback.cs
index addee08a..6071aeaf 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedback.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedback.cs
@@ -5,10 +5,26 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IBasicVolumeWithFeedback : IBasicVolumeControls
   {
-    BoolFeedback MuteFeedback { get; }
+
+    /// <summary>
+    /// Mutes the volume
+    /// </summary>
     void MuteOn();
+
+    /// <summary>
+    /// Unmutes the volume
+    /// </summary>
     void MuteOff();
+
+    /// <summary>
+    /// Sets the volume to the specified level
+    /// </summary>
+    /// <param name="level">The volume level to set</param>
     void SetVolume(ushort level);
+
+    /// <summary>
+    /// Gets the mute feedback
+    /// </summary>
     IntFeedback VolumeLevelFeedback { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedbackAdvanced.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedbackAdvanced.cs
index 5f51ce02..f0a018c5 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedbackAdvanced.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IBasicVolumeWithFeedbackAdvanced.cs
@@ -5,8 +5,14 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IBasicVolumeWithFeedbackAdvanced : IBasicVolumeWithFeedback
   {
+    /// <summary>
+    /// Gets the raw volume level
+    /// </summary>
     int RawVolumeLevel { get; }
 
+    /// <summary>
+    /// Gets the volume level units
+    /// </summary>
     eVolumeLevelUnits Units { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IChannel.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IChannel.cs
index 09e0ac7a..c8c54006 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IChannel.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IChannel.cs
@@ -7,26 +7,56 @@ using PepperDash.Essentials.Core.SmartObjects;
 namespace PepperDash.Essentials.Core
 {
 	/// <summary>
-	/// 
+	/// Defines the contract for IChannel
 	/// </summary>
 	public interface IChannel
 	{
+		/// <summary>
+		/// Channel up
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
+		/// 
 		void ChannelUp(bool pressRelease);
+		/// <summary>
+		/// Channel down
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void ChannelDown(bool pressRelease);
+
+		/// <summary>
+		/// Last channel
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void LastChannel(bool pressRelease);
+
+		/// <summary>
+		/// Guide
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
+		/// 
 		void Guide(bool pressRelease);
+
+		/// <summary>
+		/// Info
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Info(bool pressRelease);
+
+		/// <summary>
+		/// Exit
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Exit(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// IChannelExtensions class
 	/// </summary>
 	public static class IChannelExtensions
 	{
-  /// <summary>
-  /// LinkButtons method
-  /// </summary>
+		/// <summary>
+		/// LinkButtons method
+		/// </summary>
 		public static void LinkButtons(this IChannel dev, BasicTriList triList)
 		{
 			triList.SetBoolSigAction(123, dev.ChannelUp);
@@ -37,9 +67,9 @@ namespace PepperDash.Essentials.Core
 			triList.SetBoolSigAction(134, dev.Exit);
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
 		public static void UnlinkButtons(this IChannel dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(123);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IColorFunctions.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IColorFunctions.cs
index 0df2a97d..69acc8f6 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IColorFunctions.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IColorFunctions.cs
@@ -7,24 +7,45 @@ using PepperDash.Essentials.Core.SmartObjects;
 namespace PepperDash.Essentials.Core
 {
 	/// <summary>
-	/// 
+	/// IColor interface
 	/// </summary>
 	public interface IColor
 	{
+		/// <summary>
+		/// Red button
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Red(bool pressRelease);
+
+		/// <summary>
+		/// Green button
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Green(bool pressRelease);
+
+		/// <summary>
+		/// Yellow button
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Yellow(bool pressRelease);
+
+		/// <summary>
+		/// Blue button
+		/// </summary>
+		/// <param name="pressRelease">indicates whether this is a press or release</param>
 		void Blue(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// IColorExtensions class
 	/// </summary>
 	public static class IColorExtensions
 	{
-  /// <summary>
-  /// LinkButtons method
-  /// </summary>
+		/// <summary>
+		/// LinkButtons method
+		/// </summary>
+		/// <param name="dev">The IColor device</param>
+		/// <param name="TriList">The BasicTriList to link</param>
 		public static void LinkButtons(this IColor dev, BasicTriList TriList)
 		{
 			TriList.SetBoolSigAction(155, dev.Red);
@@ -33,9 +54,11 @@ namespace PepperDash.Essentials.Core
 			TriList.SetBoolSigAction(158, dev.Blue);
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
+		/// <param name="dev">The IColor device</param>
+		/// <param name="triList">The BasicTriList to unlink</param>
 		public static void UnlinkButtons(this IColor dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(155);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDPad.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDPad.cs
index 4a070382..ec9362b8 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDPad.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDPad.cs
@@ -11,23 +11,57 @@ namespace PepperDash.Essentials.Core
 	/// </summary>
 	public interface IDPad : IKeyed
 	{
+		/// <summary>
+		/// Up button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Up(bool pressRelease);
+
+		/// <summary>
+		/// Down button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Down(bool pressRelease);
+
+		/// <summary>
+		/// Left button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Left(bool pressRelease);
+
+		/// <summary>
+		/// Right button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Right(bool pressRelease);
+
+		/// <summary>
+		/// Select button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Select(bool pressRelease);
+
+		/// <summary>
+		/// Menu button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Menu(bool pressRelease);
+
+		/// <summary>
+		/// Exit button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Exit(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// IDPadExtensions class
 	/// </summary>
 	public static class IDPadExtensions
 	{
-  /// <summary>
-  /// LinkButtons method
-  /// </summary>
+		/// <summary>
+		/// LinkButtons method
+		/// </summary>
 		public static void LinkButtons(this IDPad dev, BasicTriList triList)
 		{
 			triList.SetBoolSigAction(138, dev.Up);
@@ -39,9 +73,9 @@ namespace PepperDash.Essentials.Core
 			triList.SetBoolSigAction(134, dev.Exit);        
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
 		public static void UnlinkButtons(this IDPad dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(138);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDvr.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDvr.cs
index 214fa78b..527e8d46 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDvr.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IDvr.cs
@@ -16,24 +16,40 @@ namespace PepperDash.Essentials.Core
 	/// </summary>
 	public interface IDvr : IDPad
 	{
+		/// <summary>
+		/// DVR List button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void DvrList(bool pressRelease);
+
+		/// <summary>
+		/// Record button press
+		/// </summary>
+		/// <param name="pressRelease">determines if the button is pressed or released</param>
 		void Record(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// IDvrExtensions class
 	/// </summary>
 	public static class IDvrExtensions
 	{
-  /// <summary>
-  /// LinkButtons method
-  /// </summary>
+		/// <summary>
+		/// LinkButtons method
+		/// </summary>
+		/// <param name="dev">IDvr device</param>
+		/// <param name="triList">BasicTriList to link to</param>
 		public static void LinkButtons(this IDvr dev, BasicTriList triList)
 		{
 			triList.SetBoolSigAction(136, dev.DvrList);
 			triList.SetBoolSigAction(152, dev.Record);
 		}
 
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
+		/// <param name="dev">IDvr device</param>
+		/// <param name="triList">BasicTriList to unlink from</param>
 		public static void UnlinkButtons(this IDvr dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(136);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IEmergencyOSD.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IEmergencyOSD.cs
index c24e3e7a..efc068b0 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IEmergencyOSD.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IEmergencyOSD.cs
@@ -11,7 +11,15 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface IEmergencyOSD
     {
+        /// <summary>
+        /// Shows an emergency message on the OSD
+        /// </summary>
+        /// <param name="url">The URL of the emergency message to display</param>
         void ShowEmergencyMessage(string url);
+
+        /// <summary>
+        /// Hides the emergency message from the OSD
+        /// </summary>
         void HideEmergencyMessage();
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IFullAudioSettings.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IFullAudioSettings.cs
index 5344dd6f..7036551c 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IFullAudioSettings.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IFullAudioSettings.cs
@@ -5,37 +5,149 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IFullAudioSettings : IBasicVolumeWithFeedback
   {
+    /// <summary>
+    /// SetBalance method
+    /// </summary>
+    /// <param name="level">level to set</param>
     void SetBalance(ushort level);
+
+    /// <summary>
+    /// BalanceLeft method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void BalanceLeft(bool pressRelease);
+
+    /// <summary>
+    /// BalanceRight method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void BalanceRight(bool pressRelease);
 
+    /// <summary>
+    /// SetBass method
+    /// </summary>
+    /// <param name="level">level to set</param>
     void SetBass(ushort level);
+
+    /// <summary>
+    /// BassUp method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void BassUp(bool pressRelease);
+
+    /// <summary>
+    /// BassDown method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void BassDown(bool pressRelease);
 
+    /// <summary>
+    /// SetTreble method
+    /// </summary>
+    /// <param name="level">level to set</param>
     void SetTreble(ushort level);
+
+    /// <summary>
+    /// TrebleUp method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void TrebleUp(bool pressRelease);
+
+    /// <summary>
+    /// TrebleDown method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void TrebleDown(bool pressRelease);
 
+    /// <summary>
+    /// hasMaxVolume property
+    /// </summary>
     bool hasMaxVolume { get; }
+
+    /// <summary>
+    /// SetMaxVolume method
+    /// </summary>
+    /// <param name="level">level to set</param>
     void SetMaxVolume(ushort level);
+
+    /// <summary>
+    /// MaxVolumeUp method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void MaxVolumeUp(bool pressRelease);
+
+    /// <summary>
+    /// MaxVolumeDown method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void MaxVolumeDown(bool pressRelease);
 
+    /// <summary>
+    /// hasDefaultVolume property
+    /// </summary>
     bool hasDefaultVolume { get; }
+
+    /// <summary>
+    /// SetDefaultVolume method
+    /// </summary>
+    /// <param name="level">level to set</param>
     void SetDefaultVolume(ushort level);
+
+    /// <summary>
+    /// DefaultVolumeUp method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void DefaultVolumeUp(bool pressRelease);
+
+    /// <summary>
+    /// DefaultVolumeDown method
+    /// </summary>
+    /// <param name="pressRelease">determines if the button is pressed or released</param>
     void DefaultVolumeDown(bool pressRelease);
 
+    /// <summary>
+    /// LoudnessToggle method
+    /// </summary>
     void LoudnessToggle();
+
+    /// <summary>
+    /// MonoToggle method
+    /// </summary>
     void MonoToggle();
 
+    /// <summary>
+    /// LoudnessFeedback property
+    /// </summary>
     BoolFeedback LoudnessFeedback { get; }
+
+    /// <summary>
+    /// MonoFeedback property
+    /// </summary>
     BoolFeedback MonoFeedback { get; }
+
+    /// <summary>
+    /// BalanceFeedback property
+    /// </summary>
     IntFeedback BalanceFeedback { get; }
+
+    /// <summary>
+    /// BassFeedback property
+    /// </summary>
     IntFeedback BassFeedback { get; }
+
+    /// <summary>
+    /// TrebleFeedback property
+    /// </summary>
     IntFeedback TrebleFeedback { get; }
+
+    /// <summary>
+    /// MaxVolumeFeedback property
+    /// </summary>
     IntFeedback MaxVolumeFeedback { get; }
+
+    /// <summary>
+    /// DefaultVolumeFeedback property
+    /// </summary>
     IntFeedback DefaultVolumeFeedback { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasBranding.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasBranding.cs
index 299f1431..c05ef572 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasBranding.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasBranding.cs
@@ -7,7 +7,15 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface IHasBranding
     {
+        /// <summary>
+        /// Gets whether branding is enabled
+        /// </summary>
         bool BrandingEnabled { get; }
+
+        /// <summary>
+        /// Initializes branding for the device
+        /// </summary>
+        /// <param name="roomKey">The key identifying the room for branding purposes</param>
         void InitializeBranding(string roomKey);
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasCurrentVolumeControls.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasCurrentVolumeControls.cs
index e6b1d7a3..8239f2d5 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasCurrentVolumeControls.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasCurrentVolumeControls.cs
@@ -7,11 +7,24 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasCurrentVolumeControls
   {
+    /// <summary>
+    /// CurrentVolumeControls property
+    /// </summary>
     IBasicVolumeControls CurrentVolumeControls { get; }
+
+    /// <summary>
+    /// CurrentVolumeDeviceChange event
+    /// </summary>
     event EventHandler<VolumeDeviceChangeEventArgs> CurrentVolumeDeviceChange;
 
+    /// <summary>
+    /// SetDefaultLevels method
+    /// </summary>
     void SetDefaultLevels();
 
+    /// <summary>
+    /// ZeroVolumeWhenSwtichingVolumeDevices property
+    /// </summary>
     bool ZeroVolumeWhenSwtichingVolumeDevices { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasFarEndContentStatus.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasFarEndContentStatus.cs
index 114665db..5a8f66ee 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasFarEndContentStatus.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasFarEndContentStatus.cs
@@ -5,6 +5,9 @@
     /// </summary>
     public interface IHasFarEndContentStatus
     {
+        /// <summary>
+        /// Gets whether far end content is being received
+        /// </summary>
          BoolFeedback ReceivingContent { get; }
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasInputs.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasInputs.cs
index ff9511fa..42e97b4b 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasInputs.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasInputs.cs
@@ -11,6 +11,9 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </example>
     public interface IHasInputs<T> : IKeyName
     {
+        /// <summary>
+        /// Gets the collection of inputs
+        /// </summary>
         ISelectableItems<T> Inputs { get; }
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControl.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControl.cs
index 4a89d8cf..20867868 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControl.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControl.cs
@@ -5,6 +5,9 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasMuteControl
   {
+    /// <summary>
+    /// MuteToggle method
+    /// </summary>
     void MuteToggle();
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControlWithFeedback.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControlWithFeedback.cs
index 5278541a..eb71b40f 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControlWithFeedback.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasMuteControlWithFeedback.cs
@@ -5,8 +5,19 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasMuteControlWithFeedback : IHasMuteControl
   {
+    /// <summary>
+    /// MuteFeedback property
+    /// </summary>
     BoolFeedback MuteFeedback { get; }
+
+    /// <summary>
+    /// MuteOn method
+    /// </summary>
     void MuteOn();
+
+    /// <summary>
+    /// MuteOff method
+    /// </summary>
     void MuteOff();
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasPhoneDialing.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasPhoneDialing.cs
index 80fdcbe4..b884092b 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasPhoneDialing.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasPhoneDialing.cs
@@ -8,11 +8,36 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface IHasPhoneDialing
     {
+        /// <summary>
+        /// Feedback that indicates whether the phone is off-hook
+        /// </summary>
         BoolFeedback PhoneOffHookFeedback { get; }
+
+        /// <summary>
+        /// Feedback that provides the caller ID name
+        /// </summary>
         StringFeedback CallerIdNameFeedback { get; }
+
+        /// <summary>
+        /// Feedback that provides the caller ID number
+        /// </summary>
         StringFeedback CallerIdNumberFeedback { get; }
+
+        /// <summary>
+        /// Dials a phone call to the specified number
+        /// </summary>
+        /// <param name="number">the number to dial</param>
         void DialPhoneCall(string number);
+
+        /// <summary>
+        /// Ends the current phone call
+        /// </summary>
         void EndPhoneCall();
+
+        /// <summary>
+        /// Sends a DTMF digit to the phone
+        /// </summary>
+        /// <param name="digit">the DTMF digit to send</param>
         void SendDtmfToPhone(string digit);
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasSurroundSoundModes.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasSurroundSoundModes.cs
index c1c4ec86..45b24f8b 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasSurroundSoundModes.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasSurroundSoundModes.cs
@@ -11,10 +11,18 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// Describes a device that has selectable surround sound modes
     /// </summary>
     /// <typeparam name="TKey">the type to use as the key for each input item. Most likely an enum or string</typeparam>
+    /// <typeparam name="TSelector">the type used to select an item. Most likely an enum or string</typeparam>
     public interface IHasSurroundSoundModes<TKey, TSelector>: IKeyName
     {
+        /// <summary>
+        /// The available surround sound modes
+        /// </summary>
         ISelectableItems<TKey> SurroundSoundModes { get; }
 
+        /// <summary>
+        /// The currently selected surround sound mode
+        /// </summary>
+        /// <param name="selector">the selector for the surround sound mode</param>
         void SetSurroundSoundMode(TSelector selector);
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControl.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControl.cs
index eae458a3..aff866de 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControl.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControl.cs
@@ -5,7 +5,16 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasVolumeControl
   {
+    /// <summary>
+    /// VolumeUp method
+    /// </summary>
+    /// <param name="pressRelease">determines if the volume up command is a press or release action</param>
     void VolumeUp(bool pressRelease);
+
+    /// <summary>
+    /// VolumeDown method
+    /// </summary>
+    /// <param name="pressRelease">determines if the volume down command is a press or release action</param>
     void VolumeDown(bool pressRelease);
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControlWithFeedback.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControlWithFeedback.cs
index a021edb1..fe3f5440 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControlWithFeedback.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeControlWithFeedback.cs
@@ -5,7 +5,15 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasVolumeControlWithFeedback : IHasVolumeControl
   {
+    /// <summary>
+    /// SetVolume method
+    /// </summary>
+    /// <param name="level">The volume level to set</param>
     void SetVolume(ushort level);
+
+    /// <summary>
+    /// VolumeLevelFeedback property
+    /// </summary>
     IntFeedback VolumeLevelFeedback { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeDevice.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeDevice.cs
index 706271aa..3012da19 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeDevice.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasVolumeDevice.cs
@@ -5,6 +5,9 @@ namespace PepperDash.Essentials.Core
   /// </summary>
   public interface IHasVolumeDevice
   {
+    /// <summary>
+    /// VolumeDevice property
+    /// </summary>
     IBasicVolumeControls VolumeDevice { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasWebView.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasWebView.cs
index 3d95504c..be751f41 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasWebView.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IHasWebView.cs
@@ -11,9 +11,28 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface IHasWebView
     {
+        /// <summary>
+        /// Indicates whether the webview is currently visible
+        /// </summary>
         bool WebviewIsVisible { get; }
+
+        /// <summary>
+        /// Shows the webview with the specified parameters
+        /// </summary>
+        /// <param name="url">the URL to display in the webview</param>
+        /// <param name="mode">the display mode for the webview</param>
+        /// <param name="title">the title to display on the webview</param>
+        /// <param name="target">the target for the webview</param>
         void ShowWebView(string url, string mode, string title, string target);
+
+        /// <summary>
+        /// Hides the webview
+        /// </summary>
         void HideWebView();
+
+        /// <summary>
+        /// Event raised when the webview status changes
+        /// </summary>
         event EventHandler<WebViewStatusChangedEventArgs> WebViewStatusChanged;
     }
 
@@ -27,6 +46,10 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
         /// </summary>
         public string Status { get; }
 
+        /// <summary>
+        /// Constructor for WebViewStatusChangedEventArgs
+        /// </summary>
+        /// <param name="status">the new status of the webview</param>
         public WebViewStatusChangedEventArgs(string status)
         {
             Status = status;
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageDefinition.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageDefinition.cs
index 6a168f2d..f02c0e05 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageDefinition.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageDefinition.cs
@@ -8,14 +8,49 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ILanguageDefinition
     {
+        /// <summary>
+        /// The locale name for the language definition
+        /// </summary>
         string LocaleName { get; set; }
+
+        /// <summary>
+        /// The friendly name for the language definition
+        /// </summary>
         string FriendlyName { get; set; }
+
+        /// <summary>
+        /// Indicates whether the language definition is enabled
+        /// </summary>
         bool Enable { get; set; }
+
+        /// <summary>
+        /// The UI labels for the language definition
+        /// </summary>
         List<LanguageLabel> UiLabels { get; set; }
+
+        /// <summary>
+        /// The source and destination labels for the language definition
+        /// </summary>
         List<LanguageLabel> Sources { get; set; }
+
+        /// <summary>
+        /// The destination labels for the language definition
+        /// </summary>
         List<LanguageLabel> Destinations { get; set; }
+
+        /// <summary>
+        /// The source group names for the language definition
+        /// </summary>
         List<LanguageLabel> SourceGroupNames { get; set; } 
+
+        /// <summary>
+        /// The destination group names for the language definition
+        /// </summary>
         List<LanguageLabel> DestinationGroupNames { get; set; }
+
+        /// <summary>
+        /// The room names for the language definition
+        /// </summary>
         List<LanguageLabel> RoomNames { get; set; } 
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageProvider.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageProvider.cs
index ea6afe3b..9ac22d2b 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageProvider.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILanguageProvider.cs
@@ -8,8 +8,14 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ILanguageProvider
     {
+        /// <summary>
+        /// The current language definition
+        /// </summary>
         ILanguageDefinition CurrentLanguage { get; set; }
 
+        /// <summary>
+        /// Event raised when the current language changes
+        /// </summary>
         event EventHandler CurrentLanguageChanged;
     }
 
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILevelControls.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILevelControls.cs
index 34c87419..e0a1081f 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILevelControls.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ILevelControls.cs
@@ -11,6 +11,9 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ILevelControls
     {
+        /// <summary>
+        /// The level control points
+        /// </summary>
         Dictionary<string, IBasicVolumeWithFeedback> LevelControlPoints { get; }
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlAction.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlAction.cs
index 982deaae..86a3d61a 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlAction.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlAction.cs
@@ -8,8 +8,14 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
   /// </summary>
   public interface IMobileControlAction
   {
+    /// <summary>
+    /// The messenger to use for mobile control actions
+    /// </summary>
     IMobileControlMessenger Messenger { get; }
 
+    /// <summary>
+    /// The action to perform for mobile control actions
+    /// </summary>
     Action<string, string, JToken> Action { get; }
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlMessage.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlMessage.cs
index 41645da2..326eb38d 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlMessage.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlMessage.cs
@@ -3,14 +3,26 @@ using Newtonsoft.Json.Linq;
 
 namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
 {
+  /// <summary>
+  /// Defines the contract for IMobileControlMessage
+  /// </summary>
   public interface IMobileControlMessage
   {
+    /// <summary>
+    /// The type of mobile control message
+    /// </summary>
     [JsonProperty("type")]
     string Type { get; }
 
+    /// <summary>
+    /// The client ID for the mobile control message
+    /// </summary>
     [JsonProperty("clientId", NullValueHandling = NullValueHandling.Ignore)]
     string ClientId { get; }
 
+    /// <summary>
+    /// The content of the mobile control message
+    /// </summary>
     [JsonProperty("content", NullValueHandling = NullValueHandling.Ignore)]
     JToken Content { get; }
 
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlRoomMessenger.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlRoomMessenger.cs
index 6f4d9a17..9a0a5517 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlRoomMessenger.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IMobileControlRoomMessenger.cs
@@ -8,26 +8,60 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
   /// </summary>
   public interface IMobileControlRoomMessenger : IKeyed
   {
+    /// <summary>
+    /// Raised when the user code changes
+    /// </summary>
     event EventHandler<EventArgs> UserCodeChanged;
 
+    /// <summary>
+    /// Raised when the user is prompted for the code
+    /// </summary>
     event EventHandler<EventArgs> UserPromptedForCode;
 
+    /// <summary>
+    /// Raised when a client joins the room
+    /// </summary>
     event EventHandler<EventArgs> ClientJoined;
 
+    /// <summary>
+    /// Raised when the app url changes
+    /// </summary>
     event EventHandler<EventArgs> AppUrlChanged;
 
+    /// <summary>
+    /// The user code for joining the room
+    /// </summary>
     string UserCode { get; }
 
+    /// <summary>
+    /// The QR code URL for joining the room
+    /// </summary>
     string QrCodeUrl { get; }
 
+    /// <summary>
+    /// The QR code checksum
+    /// </summary>
     string QrCodeChecksum { get; }
 
+    /// <summary>
+    /// The Mobile Control server URL
+    /// </summary>
     string McServerUrl { get; }
 
+    /// <summary>
+    /// The name of the room
+    /// </summary>
     string RoomName { get; }
 
+    /// <summary>
+    /// The Mobile Control app URL
+    /// </summary>
     string AppUrl { get; }
 
+    /// <summary>
+    /// Updates the url of the Mobile Control app 
+    /// </summary>
+    /// <param name="url">The new URL of the Mobile Control app</param>
     void UpdateAppUrl(string url);
   }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INumeric.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INumeric.cs
index 3adb7f4e..fc0fca99 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INumeric.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/INumeric.cs
@@ -10,37 +10,119 @@ namespace PepperDash.Essentials.Core
  /// </summary>
 	public interface INumericKeypad:IKeyed
 	{
+		/// <summary>
+		/// Digit buttons 0
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit0(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 1
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit1(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 2
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit2(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 3
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit3(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 4
+		/// </summary>
+		/// <param name="pressRelease"></param>
 		void Digit4(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 5
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit5(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 6
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit6(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 7
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit7(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 8
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit8(bool pressRelease);
+
+		/// <summary>
+		/// Digit buttons 9
+		/// </summary>
+		/// <param name="pressRelease">determines if the digit button command is a press or release action</param>
 		void Digit9(bool pressRelease);
 
 		/// <summary>
 		/// Used to hide/show the button and/or text on the left-hand keypad button
 		/// </summary>
 		bool HasKeypadAccessoryButton1 { get; }
+
+		/// <summary>
+		/// Label for the left-hand keypad button
+		/// </summary>
 		string KeypadAccessoryButton1Label { get; }
+
+		/// <summary>
+		/// Left-hand keypad button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button command is a press or release action</param>
 		void KeypadAccessoryButton1(bool pressRelease);
 
+		/// <summary>
+		/// Used to hide/show the button and/or text on the right-hand keypad button
+		/// </summary>
 		bool HasKeypadAccessoryButton2 { get; }
+
+		/// <summary>
+		/// Label for the right-hand keypad button
+		/// </summary>
 		string KeypadAccessoryButton2Label { get; }
+
+		/// <summary>
+		/// Right-hand keypad button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button command is a press or release action</param>
 		void KeypadAccessoryButton2(bool pressRelease);
 	}
 
+	/// <summary>
+	/// Defines the contract for ISetTopBoxNumericKeypad
+	/// </summary>
 	public interface ISetTopBoxNumericKeypad : INumericKeypad
 	{
+		/// <summary>
+		/// Dash button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button command is a press or release action</param>
 		void Dash(bool pressRelease);
+
+		/// <summary>
+		/// Keypad Enter button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button command is a press or release action</param>
 		void KeypadEnter(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// INumericExtensions class
 	/// </summary>
 	public static class INumericExtensions
 	{
@@ -65,9 +147,9 @@ namespace PepperDash.Essentials.Core
 			trilist.StringInput[111].StringValue = dev.KeypadAccessoryButton2Label;
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
 		public static void UnlinkButtons(this INumericKeypad dev, BasicTriList trilist)
 		{
 			trilist.ClearBoolSigAction(110);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPasswordPrompt.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPasswordPrompt.cs
index 31e7acaf..2ee85341 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPasswordPrompt.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPasswordPrompt.cs
@@ -19,10 +19,13 @@ namespace PepperDash.Essentials.Core
         /// <summary>
         /// Submits the password
         /// </summary>
-        /// <param name="password"></param>
+        /// <param name="password">The password to submit</param>
         void SubmitPassword(string password);
     }
 
+    /// <summary>
+    /// PasswordPromptEventArgs class
+    /// </summary>
     public class PasswordPromptEventArgs : EventArgs
     {
         /// <summary>
@@ -45,6 +48,13 @@ namespace PepperDash.Essentials.Core
         /// </summary>
         public string Message { get; private set; }
 
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="lastAttemptIncorrect">indicates if the last submitted password was incorrect</param>
+        /// <param name="loginFailed">indicates if the login attempt failed</param>
+        /// <param name="loginCancelled">indicates if the login attempt was cancelled</param>
+        /// <param name="message">provides a message related to the password prompt</param>
         public PasswordPromptEventArgs(bool lastAttemptIncorrect, bool loginFailed, bool loginCancelled, string message)
         {
             LastAttemptWasIncorrect = lastAttemptIncorrect;
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPower.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPower.cs
index 79c58fa2..b94a64ed 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPower.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IPower.cs
@@ -19,6 +19,9 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public interface IHasPowerControlWithFeedback : IHasPowerControl
     {
+        /// <summary>
+        /// Feedback indicating whether the device is powered on
+        /// </summary>
         BoolFeedback PowerIsOnFeedback { get; }
     }
 
@@ -27,13 +30,24 @@ namespace PepperDash.Essentials.Core
     /// </summary>
     public interface IHasPowerControl
     {
+        /// <summary>
+        /// Powers the device on
+        /// </summary>
         void PowerOn();
+
+        /// <summary>
+        /// Powers the device off
+        /// </summary>
         void PowerOff();
+
+        /// <summary>
+        /// Toggles the power state of the device
+        /// </summary>
         void PowerToggle();
     }
 
 	/// <summary>
-	/// 
+	/// IHasPowerControlExtensions class
 	/// </summary>
 	public static class IHasPowerControlExtensions
 	{
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IProjectorScreenLiftControl.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IProjectorScreenLiftControl.cs
index 1d5d20da..56aef09e 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IProjectorScreenLiftControl.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IProjectorScreenLiftControl.cs
@@ -5,26 +5,60 @@ using Newtonsoft.Json.Converters;
 
 namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
 {
- /// <summary>
- /// Defines the contract for IProjectorScreenLiftControl
- /// </summary>
+	/// <summary>
+	/// Defines the contract for IProjectorScreenLiftControl
+	/// </summary>
 	public interface IProjectorScreenLiftControl
 	{
+		/// <summary>
+		/// Raises the screen/lift
+		/// </summary>
 		void Raise();
+
+		/// <summary>
+		/// Lowers the screen/lift
+		/// </summary>
 		void Lower();
+
+		/// <summary>
+		/// Stops the screen/lift
+		/// </summary>
 		BoolFeedback IsInUpPosition { get; }
+
+		/// <summary>
+		/// Gets whether the screen/lift is in the up position
+		/// </summary>
 		bool InUpPosition { get; }
+
+		/// <summary>
+		/// Gets whether the screen/lift is in the down position
+		/// </summary>
 		event EventHandler<EventArgs> PositionChanged;
+
+		/// <summary>
+		/// The device key of the display associated with this screen/lift
+		/// </summary>
 		string DisplayDeviceKey { get; }
+
+		/// <summary>
+		/// The type of device
+		/// </summary>
 		eScreenLiftControlType Type { get; } // screen/lift
 	}
 
- /// <summary>
- /// Enumeration of eScreenLiftControlType values
- /// </summary>
+	/// <summary>
+	/// Enumeration of eScreenLiftControlType values
+	/// </summary>
 	public enum eScreenLiftControlType
 	{
+		/// <summary>
+		/// Lift type device
+		/// </summary>
 		lift,
+
+		/// <summary>
+		/// Screen type device
+		/// </summary>
 		screen
 	}
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItem.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItem.cs
index 8d99b959..ff05188e 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItem.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItem.cs
@@ -10,10 +10,20 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ISelectableItem : IKeyName
     {
+        /// <summary>
+        /// Raised when the item is updated
+        /// </summary>
         event EventHandler ItemUpdated;
 
+        /// <summary>
+        /// Gets or sets whether the item is selected
+        /// </summary>
         [JsonProperty("isSelected")]
         bool IsSelected { get; set;  }
+
+        /// <summary>
+        /// Selects the item
+        /// </summary>
         void Select();
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItems.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItems.cs
index f3d2beec..c955a56f 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItems.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISelectableItems.cs
@@ -9,12 +9,25 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ISelectableItems<TKey, TValue> where TValue : ISelectableItem
     {
+        /// <summary>
+        /// Raised when the items are updated
+        /// </summary>
         event EventHandler ItemsUpdated;
+
+        /// <summary>
+        /// Raised when the current item changes
+        /// </summary>
         event EventHandler CurrentItemChanged;
 
+        /// <summary>
+        /// Gets or sets the collection of selectable items
+        /// </summary>
         [JsonProperty("items")]
         Dictionary<TKey, TValue> Items { get; set; }
 
+        /// <summary>
+        /// Gets or sets the current selected item key
+        /// </summary>
         [JsonProperty("currentItem")]
         TKey CurrentItem { get; set; }
 
@@ -24,9 +37,6 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// Describes a collection of items that can be selected
     /// </summary>
     /// <typeparam name="TKey">type for the keys in the collection.  Probably a string or enum</typeparam>
-    /// <summary>
-    /// Defines the contract for ISelectableItems
-    /// </summary>
     public interface ISelectableItems<TKey> : ISelectableItems<TKey, ISelectableItem>
     {        
     }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISetTopBoxControls.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISetTopBoxControls.cs
index 646aab93..d8bf969e 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISetTopBoxControls.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ISetTopBoxControls.cs
@@ -5,9 +5,9 @@ using PepperDash.Essentials.Core.SmartObjects;
 
 namespace PepperDash.Essentials.Core
 {
- /// <summary>
- /// Defines the contract for ISetTopBoxControls
- /// </summary>
+	/// <summary>
+	/// Defines the contract for ISetTopBoxControls
+	/// </summary>
 	public interface ISetTopBoxControls : IChannel, IColor, IDPad, ISetTopBoxNumericKeypad, 
 		ITransport, IUiDisplayInfo
 	{
@@ -31,27 +31,51 @@ namespace PepperDash.Essentials.Core
 		/// </summary>
 		bool HasDpad { get; }
 
+		/// <summary>
+		/// TV Presets model
+		/// </summary>
 		PepperDash.Essentials.Core.Presets.DevicePresetsModel TvPresets { get; }
+
+		/// <summary>
+		/// LoadPresets method
+		/// </summary>
+		/// <param name="filePath">path to file that contains the presets</param>
 		void LoadPresets(string filePath);
 
+		/// <summary>
+		/// DvrList button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void DvrList(bool pressRelease);
+
+		/// <summary>
+		/// Replay button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Replay(bool pressRelease);
 	}
 
+	/// <summary>
+	/// ISetTopBoxControlsExtensions class
+	/// </summary>
 	public static class ISetTopBoxControlsExtensions
 	{
-  /// <summary>
-  /// LinkButtons method
-  /// </summary>
+		/// <summary>
+		/// LinkButtons method
+		/// </summary>
+		/// <param name="dev">The ISetTopBoxControls device</param>
+		/// <param name="triList">The BasicTriList to link buttons to</param>
 		public static void LinkButtons(this ISetTopBoxControls dev, BasicTriList triList)
 		{
 			triList.SetBoolSigAction(136, dev.DvrList);
 			triList.SetBoolSigAction(152, dev.Replay);
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
+		/// <param name="dev">The ISetTopBoxControls device</param>
+		/// <param name="triList">The BasicTriList to unlink buttons from</param>
 		public static void UnlinkButtons(this ISetTopBoxControls dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(136);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITemperatureSensor.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITemperatureSensor.cs
index f77a2ef8..897855b4 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITemperatureSensor.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITemperatureSensor.cs
@@ -17,9 +17,15 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
         /// </summary>
         IntFeedback TemperatureFeedback { get; }
 
-
+        /// <summary>
+        /// The temperature in Celsius format
+        /// </summary>
         BoolFeedback TemperatureInCFeedback { get; }
 
+        /// <summary>
+        /// Sets the temperature format to Celsius or Fahrenheit
+        /// </summary>
+        /// <param name="setToC">If true, sets the format to Celsius; otherwise, sets it to Fahrenheit.</param>
         void SetTemperatureFormat(bool setToC);
     }
 }
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITransport.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITransport.cs
index 1a8f2a2b..917a4b19 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITransport.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITransport.cs
@@ -7,25 +7,65 @@ namespace PepperDash.Essentials.Core
  /// </summary>
 	public interface ITransport
 	{
+		/// <summary>
+		/// Play button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Play(bool pressRelease);
+
+		/// <summary>
+		/// Pause button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Pause(bool pressRelease);
+
+		/// <summary>
+		/// Rewind button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Rewind(bool pressRelease);
+
+		/// <summary>
+		/// Fast Forward button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void FFwd(bool pressRelease);
+
+		/// <summary>
+		/// Chapter Minus button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void ChapMinus(bool pressRelease);
+
+		/// <summary>
+		/// Chapter Plus button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void ChapPlus(bool pressRelease);
+
+		/// <summary>
+		/// Stop button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Stop(bool pressRelease);
+
+		/// <summary>
+		/// Record button action
+		/// </summary>
+		/// <param name="pressRelease">determines if the button action is a press or release</param>
 		void Record(bool pressRelease);
 	}
 
 	/// <summary>
-	/// 
+	/// ITransportExtensions class
 	/// </summary>
 	public static class ITransportExtensions
 	{
 		/// <summary>
 		/// Attaches to trilist joins: Play:145, Pause:146, Stop:147, ChapPlus:148, ChapMinus:149, Rewind:150, Ffwd:151, Record:154
-		/// 
 		/// </summary>
+		/// <param name="dev">The ITransport device</param>
+		/// <param name="triList">The BasicTriList to link buttons to</param>
 		public static void LinkButtons(this ITransport dev, BasicTriList triList)
 		{
 			triList.SetBoolSigAction(145, dev.Play);
@@ -38,9 +78,11 @@ namespace PepperDash.Essentials.Core
 			triList.SetBoolSigAction(154, dev.Record);
 		}
 
-  /// <summary>
-  /// UnlinkButtons method
-  /// </summary>
+		/// <summary>
+		/// UnlinkButtons method
+		/// </summary>
+		/// <param name="dev">The ITransport device</param>
+		/// <param name="triList">The BasicTriList to unlink buttons from</param>
 		public static void UnlinkButtons(this ITransport dev, BasicTriList triList)
 		{
 			triList.ClearBoolSigAction(145);
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITvPresetsProvider.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITvPresetsProvider.cs
index 68650fa4..09b7066c 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITvPresetsProvider.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/ITvPresetsProvider.cs
@@ -7,6 +7,9 @@ namespace PepperDash.Essentials.Core.DeviceTypeInterfaces
     /// </summary>
     public interface ITvPresetsProvider
     {
+        /// <summary>
+        /// The TV presets model
+        /// </summary>
         DevicePresetsModel TvPresets { get; }
     }
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IUiDisplayInfo.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IUiDisplayInfo.cs
index aa0144fe..231abf1f 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IUiDisplayInfo.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IUiDisplayInfo.cs
@@ -2,11 +2,14 @@
 
 namespace PepperDash.Essentials.Core
 {
- /// <summary>
- /// Defines the contract for IUiDisplayInfo
- /// </summary>
+	/// <summary>
+	/// Defines the contract for IUiDisplayInfo
+	/// </summary>
 	public interface IUiDisplayInfo : IKeyed
 	{
+		/// <summary>
+		/// Display UI Type
+		/// </summary>
 		uint DisplayUiType { get; }
 	}
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IWarmingCooling.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IWarmingCooling.cs
index 2baf1548..e69bf35c 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IWarmingCooling.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/IWarmingCooling.cs
@@ -11,7 +11,14 @@ namespace PepperDash.Essentials.Core
 	/// </summary>
 	public interface IWarmingCooling
 	{
+		/// <summary>
+		/// Feedback indicating whether the device is warming up
+		/// </summary>
 		BoolFeedback IsWarmingUpFeedback { get; }
+
+		/// <summary>
+		/// Feedback indicating whether the device is cooling down
+		/// </summary>
 		BoolFeedback IsCoolingDownFeedback { get; }
 	}
 }
\ No newline at end of file
diff --git a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/eVolumeLevelUnits.cs b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/eVolumeLevelUnits.cs
index 0ebb9270..b88ea928 100644
--- a/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/eVolumeLevelUnits.cs
+++ b/src/PepperDash.Essentials.Core/DeviceTypeInterfaces/eVolumeLevelUnits.cs
@@ -1,10 +1,28 @@
 namespace PepperDash.Essentials.Core
 {
+  /// <summary>
+  /// Volume level units
+  /// </summary>
   public enum eVolumeLevelUnits
   {
+    /// <summary>
+    /// Decibels
+    /// </summary>
     Decibels,
+
+    /// <summary>
+    /// Percent
+    /// </summary>
     Percent,
+
+    /// <summary>
+    /// Relative
+    /// </summary>
     Relative,
+
+    /// <summary>
+    /// Absolute
+    /// </summary>
     Absolute
   }
 }
\ No newline at end of file