diff --git a/src/PepperDash.Essentials.Core/Room/IRoomEventSchedule.cs b/src/PepperDash.Essentials.Core/Room/IRoomEventSchedule.cs
index b4d8a70a..c2595151 100644
--- a/src/PepperDash.Essentials.Core/Room/IRoomEventSchedule.cs
+++ b/src/PepperDash.Essentials.Core/Room/IRoomEventSchedule.cs
@@ -1,4 +1,5 @@
 using PepperDash.Essentials.Room.Config;
+using System;
 using System.Collections.Generic;
 
 namespace PepperDash.Essentials.Core
@@ -8,5 +9,12 @@ namespace PepperDash.Essentials.Core
         void AddOrUpdateScheduledEvent(ScheduledEventConfig eventConfig);
 
         List<ScheduledEventConfig> GetScheduledEvents();
+
+        event EventHandler<ScheduledEventEventArgs> ScheduledEventsChanged;
+    }
+
+    public class ScheduledEventEventArgs : EventArgs
+    {
+        public List<ScheduledEventConfig> ScheduledEvents;
     }
 }