Revert "Revert "WWST-40 Philips Hue: Implement device watch""

devicetypes/smartthings/hue-lux-bulb.src/hue-lux-bulb.groovy

@@ -14,6 +14,7 @@ metadata {
 		capability "Switch"
 		capability "Refresh"
 		capability "Sensor"
+        capability "Health Check"
 
         command "refresh"
 	}
@@ -48,6 +49,10 @@ metadata {
     }
 }
 
+void installed() {
+	sendEvent(name: "checkInterval", value: 60 * 30, data: [protocol: "lan"], displayed: false)
+}
+
 // parse events into attributes
 def parse(description) {
 	log.debug "parse() - $description"
@@ -87,3 +92,7 @@ void refresh() {
 	log.debug "Executing 'refresh'"
 	parent.manualRefresh()
 }
+
+def ping() {
+    log.debug "${parent.ping(this)}"
+}