Hi inserted a debug line here: def onCommand(self, Unit, Command, ifValue, dDetails = None): Domoticz.Debug("onCommand1 called for unit " + str(Unit) + ": Command: '" + str(Command) + "', ifValue: " + str(ifValue) + ", dDetails: " + str(dDetails)) Got this result: 2017-12-31 12:55:29.645 (eBus-t-all ...