diff --git a/src/PepperDash.Essentials.Core/CrestronIO/GenericDigitalInputDevice.cs b/src/PepperDash.Essentials.Core/CrestronIO/GenericDigitalInputDevice.cs
index 6f858144..20ed56d6 100644
--- a/src/PepperDash.Essentials.Core/CrestronIO/GenericDigitalInputDevice.cs
+++ b/src/PepperDash.Essentials.Core/CrestronIO/GenericDigitalInputDevice.cs
@@ -21,6 +21,7 @@ namespace PepperDash.Essentials.Core.CrestronIO
     public class GenericDigitalInputDevice : EssentialsBridgeableDevice, IDigitalInput, IHasFeedback
     {
         private DigitalInput inputPort;
+        private bool invertState;
 
         /// <summary>
         /// Gets or sets the InputStateFeedback
@@ -41,7 +42,10 @@ namespace PepperDash.Essentials.Core.CrestronIO
             IOPortConfig config)
             : base(key, name)
         {
-            InputStateFeedback = new BoolFeedback("inputState", () => inputPort.State);
+            invertState = !string.IsNullOrEmpty(config.CircuitType) && 
+                         config.CircuitType.Equals("NC", StringComparison.OrdinalIgnoreCase);
+            
+            InputStateFeedback = new BoolFeedback("inputState", () => invertState ? !inputPort.State : inputPort.State);
 
             AddPostActivationAction(() =>
             {
diff --git a/src/PepperDash.Essentials.Core/CrestronIO/GenericVersiportInputDevice.cs b/src/PepperDash.Essentials.Core/CrestronIO/GenericVersiportInputDevice.cs
index e2c4474a..43d97e9c 100644
--- a/src/PepperDash.Essentials.Core/CrestronIO/GenericVersiportInputDevice.cs
+++ b/src/PepperDash.Essentials.Core/CrestronIO/GenericVersiportInputDevice.cs
@@ -18,6 +18,7 @@ namespace PepperDash.Essentials.Core.CrestronIO
     public class GenericVersiportDigitalInputDevice : EssentialsBridgeableDevice, IDigitalInput, IPartitionStateProvider, IHasFeedback
     {
         private Versiport inputPort;
+        private bool invertState;
 
         /// <summary>
         /// Gets or sets the InputStateFeedback
@@ -47,7 +48,10 @@ namespace PepperDash.Essentials.Core.CrestronIO
         public GenericVersiportDigitalInputDevice(string key, string name, Func<IOPortConfig, Versiport> postActivationFunc, IOPortConfig config) :
             base(key, name)
         {
-            InputStateFeedback = new BoolFeedback("inputState", () => inputPort.DigitalIn);
+            invertState = !string.IsNullOrEmpty(config.CircuitType) && 
+                         config.CircuitType.Equals("NC", StringComparison.OrdinalIgnoreCase);
+            
+            InputStateFeedback = new BoolFeedback("inputState", () => invertState ? !inputPort.DigitalIn : inputPort.DigitalIn);
             PartitionPresentFeedback = new BoolFeedback("partitionPresent", () => !inputPort.DigitalIn);
 
             AddPostActivationAction(() =>
diff --git a/src/PepperDash.Essentials.Core/CrestronIO/IOPortConfig.cs b/src/PepperDash.Essentials.Core/CrestronIO/IOPortConfig.cs
index 8641df69..7b76958b 100644
--- a/src/PepperDash.Essentials.Core/CrestronIO/IOPortConfig.cs
+++ b/src/PepperDash.Essentials.Core/CrestronIO/IOPortConfig.cs
@@ -37,5 +37,12 @@ namespace PepperDash.Essentials.Core.CrestronIO
         /// </summary>
         [JsonProperty("minimumChange")]
         public int MinimumChange { get; set; }
+
+        /// <summary>
+        /// Gets or sets the circuit type: "NO" (Normally Open) or "NC" (Normally Closed)
+        /// If set to "NC", the input state will be inverted. Defaults to "NO" if not specified.
+        /// </summary>
+        [JsonProperty("circuitType")]
+        public string CircuitType { get; set; } = "NO";
     }
 }
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