[QUOTE=ashleigh]If things change about 8 to 10 seconds after commands are issued, and you are using AREA addressing, then it is a dead giveaway that your setup with area addresses is incorrect. There is a long explanation, the behaviour is as expected (and correct, believe it or not). In general, the preferred method of switching many thingies at a time is to use scenes.[/QUOTE] So Ashleigh are you referring to 3 x MMI periods ?