diff --git a/lib/devices/gateway.js b/lib/devices/gateway.js
index 5c9637e..82d7c62 100644
--- a/lib/devices/gateway.js
+++ b/lib/devices/gateway.js
@@ -71,28 +71,29 @@ class Gateway extends Device {
 		this.type = Gateway.TYPE;
 
 		this._devices = {};
+
+		this.defineProperty('illumination', {
+			name: 'illuminance'
+		});
+
+		this.defineProperty('rgb', {
+			handler: (result, rgba) => {
+				result['rgb'] = {
+					red: 0xff & (rgba >> 16),
+					green: 0xff & (rgba >> 8),
+					blue: 0xff & rgba
+				};
+				result['brightness'] = Math.round(0xff & (rgba >> 24));
+			}
+		});
+
+		// Monitor every minute right now
+		this._monitorInterval = 60 * 1000;
 	}
 
 	_report(properties) {
 		Object.keys(properties).forEach(key => {
-			switch(key) {
-				case 'illumination':
-					// TODO: What scale does this actually have? Lux?
-					this.setProperty('illuminance', properties[key]);
-					break;
-				case 'rgb':
-				{
-					const rgba = properties[key];
-
-					this.setProperty('rgb',  {
-						red: 0xff & (rgba >> 16),
-						green: 0xff & (rgba >> 8),
-						blue: 0xff & rgba
-					});
-					this.setProperty('brightness', Math.round((0xff & (rgba >> 24)) ));
-					break;
-				}
-			}
+			this.setRawProperty(key, properties[key]);
 		});
 	}