Turn lights off automatically with the Enerlites DWVS Passive Infrared Wall Switch Vacancy Sensor. The Vacancy Sensor works like an automatic off timer. When a user enters the room, then turn on the light at the Sensor, then, a timer is turned on. When the Sensor sees no one else is in the room and the set amount of time has passed, the Sensor automatically turns off the light. The light can be manually turned off as well, though. Adjustable time delay and motion sensitivity make the Sensor very customizable.