Hints on how you would tackle this... I call it the reverse PIR conundrum. Background - Built the new house and had cbus installed, mainly wanted one button to turn all lights off when leaving, and I love the ramp off... But since that initial love, many extra other things have been added. After moving in - thinking of more to do... What annoys me the most is the kids - leaving lights on, and leaving the room. I hate walking upstairs seeing a bedroom light on, where it was probably bright enough without it, but no kids in sight, and knowing they aint been there for the last hour..... So how would you tackle occupancy of a room, and turnng a light off if nobody was in the room for a period of time. It cant be just a 360 PIR - as I dont want the PIR to turn on a light, sometimes you walk into a room to do something and dont need the light on, the sensor doesnt need to sense someone in the room at night (pitch black) and senses someone rolling over in their sleep to turn a light on - that would be silly. So, only if a light was on, the sensor detects no one in the room for 5 minutes and then turns the light off. It needs to do this in daylight or darkness (well in darkness the light would be on - so it would never truely be in darkness - I mean during the day or night if the light was on). On a 5753L I guess Motion in Light is a clue, or Any Motion (but that may flood network), and guessing the PIR would need the sensor turned all the way to the left (daylight)... I'd start playing with some logic - have a pac and touch screen - but before I started experimenting with the unkown - thought I'd ask for words of wisdom - as there may be a simpler way of doing it ? Thanks