diff --git a/GSS2.Core/Hardware/IlluminatorService.cs b/GSS2.Core/Hardware/IlluminatorService.cs
index 05b3302..0f79c97 100644
--- a/GSS2.Core/Hardware/IlluminatorService.cs
+++ b/GSS2.Core/Hardware/IlluminatorService.cs
@@ -75,6 +75,10 @@ public class IlluminatorService : IDisposable
     private readonly GpioPin _uv365Relay;
     private readonly GpioPin _fanRelay;
 
+    public event EventHandler<double>? WhiteIntencityChanged;
+    public event EventHandler<double>? Uv254IntencityChanged;
+    public event EventHandler<double>? Uv365IntencityChanged;
+
     public IlluminatorService(ILogger<IlluminatorService> logger, IlluminatorServiceConfiguration? configuration = null)
     {
         _logger = logger;
@@ -118,9 +122,21 @@ public class IlluminatorService : IDisposable
     {
         try
         {
-            if (white is not null) _whitePwm.DutyCycle = CalculateDuty(white.Value, _configuration.MaxWhitePwmDuty);
-            if (uv365 is not null) _uv365Pwm.DutyCycle = CalculateDuty(uv365.Value, _configuration.MaxUv365PwmDuty);
-            if (uv254 is not null) _uv254Pwm.DutyCycle = CalculateDuty(uv254.Value, _configuration.MaxUv254PwmDuty);
+            if (white is not null)
+            {
+                _whitePwm.DutyCycle = CalculateDuty(white.Value, _configuration.MaxWhitePwmDuty);
+                WhiteIntencityChanged?.Invoke(this, white.Value);
+            }
+            if (uv365 is not null)
+            {
+                _uv365Pwm.DutyCycle = CalculateDuty(uv365.Value, _configuration.MaxUv365PwmDuty);
+                Uv365IntencityChanged?.Invoke(this, uv365.Value);
+            }
+            if (uv254 is not null)
+            {
+                _uv254Pwm.DutyCycle = CalculateDuty(uv254.Value, _configuration.MaxUv254PwmDuty);
+                Uv254IntencityChanged?.Invoke(this, uv254.Value);
+            }
         }
         catch (Exception e)
         {