I only need to detect occupancy in the room. If there is a person or be it person(s) (their number don't matter), I want to switch on the lights and fans, and if no one is in the room for say 10 minutes then switch off?
Does this sensor detect motion or heat signature? I mean I was thinking that if a person is sitting still in the room, the sensor will think that the room is empty, isn't that the case?