diff --git a/Source/Meadow.Contracts/Hardware/Contracts/IPinExtensions.cs b/Source/Meadow.Contracts/Hardware/Contracts/IPinExtensions.cs
index 3f8104a2..74c77b4e 100644
--- a/Source/Meadow.Contracts/Hardware/Contracts/IPinExtensions.cs
+++ b/Source/Meadow.Contracts/Hardware/Contracts/IPinExtensions.cs
@@ -74,6 +74,19 @@ public static IDigitalInterruptPort CreateDigitalInterruptPort(this IPin pin, In
         throw new ArgumentException("Pin is not digital input capable");
     }
 
+    /// <summary>
+    /// Creates a digital interrupt port for the specified pin with specified configurations.
+    /// </summary>
+    /// <param name="pin">The pin to create a digital interrupt port for.</param>
+    /// <param name="interruptMode">The interrupt mode for the digital interrupt port.</param>
+    /// <param name="resistorMode">The resistor mode for the digital interrupt port.</param>
+    /// <param name="debounceDuration">The debounce duration for the digital interrupt port.</param>
+    /// <returns>The created digital interrupt port.</returns>
+    public static IDigitalInterruptPort CreateDigitalInterruptPort(this IPin pin, InterruptMode interruptMode, ResistorMode resistorMode, TimeSpan debounceDuration)
+    {
+        return pin.CreateDigitalInterruptPort(interruptMode, resistorMode, debounceDuration, TimeSpan.Zero);
+    }
+
     /// <summary>
     /// Creates a digital input port for the specified pin with the specified resistor mode.
     /// </summary>
diff --git a/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/ICurrentSensor.cs b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/ICurrentSensor.cs
new file mode 100644
index 00000000..73cf01ff
--- /dev/null
+++ b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/ICurrentSensor.cs
@@ -0,0 +1,14 @@
+using Meadow.Units;
+
+namespace Meadow.Peripherals.Sensors;
+
+/// <summary>
+/// Electrical Current sensor interface requirements.
+/// </summary>
+public interface ICurrentSensor : ISamplingSensor<Current>
+{
+    /// <summary>
+    /// Last value read from the Current sensor.
+    /// </summary>
+    public Current? Current { get; }
+}
diff --git a/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IPowerSensor.cs b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IPowerSensor.cs
new file mode 100644
index 00000000..7a11f3d0
--- /dev/null
+++ b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IPowerSensor.cs
@@ -0,0 +1,14 @@
+using Meadow.Units;
+
+namespace Meadow.Peripherals.Sensors;
+
+/// <summary>
+/// Electrical Power sensor interface requirements.
+/// </summary>
+public interface IPowerSensor : ISamplingSensor<Power>
+{
+    /// <summary>
+    /// Last value read from the Power sensor.
+    /// </summary>
+    public Power? Power { get; }
+}
diff --git a/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IVoltageSensor.cs b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IVoltageSensor.cs
new file mode 100644
index 00000000..0eaf4061
--- /dev/null
+++ b/Source/Meadow.Contracts/Peripherals/Sensors/Electrical/IVoltageSensor.cs
@@ -0,0 +1,14 @@
+using Meadow.Units;
+
+namespace Meadow.Peripherals.Sensors;
+
+/// <summary>
+/// Voltage sensor interface requirements.
+/// </summary>
+public interface IVoltageSensor : ISamplingSensor<Voltage>
+{
+    /// <summary>
+    /// Last value read from the Voltage sensor.
+    /// </summary>
+    public Voltage? Voltage { get; }
+}
diff --git a/Source/Meadow.Contracts/Platform OS/IPlatformOS.cs b/Source/Meadow.Contracts/Platform OS/IPlatformOS.cs
index 88a84b01..d25cba9c 100644
--- a/Source/Meadow.Contracts/Platform OS/IPlatformOS.cs	
+++ b/Source/Meadow.Contracts/Platform OS/IPlatformOS.cs	
@@ -31,7 +31,7 @@ public partial interface IPlatformOS : IPowerController
 
 
     /// <summary>
-    /// Gets the amount of storage space in use on the primarys storage device
+    /// Gets the amount of storage space in use on the primary storage device
     /// </summary>
     DigitalStorage GetPrimaryDiskSpaceInUse();