diff --git a/Windows/CS/Framework4.0/Camera/Camera/LedDetector.cs b/Windows/CS/Framework4.0/Camera/Camera/LedDetector.cs
index 1160801..8bb8430 100644
--- a/Windows/CS/Framework4.0/Camera/Camera/LedDetector.cs
+++ b/Windows/CS/Framework4.0/Camera/Camera/LedDetector.cs
@@ -5,11 +5,13 @@ using Emgu.CV.CvEnum;
 using Emgu.CV.Structure;
 
 public enum LedState { Off, On }
-
 public enum LedColor { Unknown, Red, Green, Blue }
 
 public class LedDetector
 {
+    private const int BRIGHT_LIMIT = 110;
+    private const int SAT_LIMIT = 35;
+
     public Tuple<LedState, LedColor> Detect(Image<Bgr, byte> image, Rectangle roi)
     {
         using (Image<Bgr, byte> subImg = image.GetSubRect(roi))
@@ -27,9 +29,12 @@ public class LedDetector
             S.Dispose();
             V.Dispose();
 
-            bool isOff = (avgS < 38) || (avgV < 55);
-            if (isOff)
+            bool isOn = avgV > BRIGHT_LIMIT && avgS < SAT_LIMIT;
+
+            if (!isOn)
+            {
                 return new Tuple<LedState, LedColor>(LedState.Off, LedColor.Unknown);
+            }
 
             LedColor color = LedColor.Unknown;
             if ((avgH >= 0 && avgH <= 10) || (avgH >= 170 && avgH <= 180))