The VSW-P-0801-120 Passive Infrared Single or Multi-way Vacancy Sensing Wall Switch is a motion sensing lighting control and conventional Wall Switch all-in-one that is used to for energy savings and convenience. The VSW-P-0801-120 is designed to detect motion from a heat-emitting source (such as a person entering a room) within its field-of-view and automatically switch lights ON. PIR sensors are considered line-of-sight sensors, meaning that the sensor must be able to have a direct line-of-sight to the person making the motion. The lights are turned ON by pressing the Pushbutton. The sensor provides true multi-way ON/OFF control. When lights have been activated, the lights will remain on as long as on the sensor(s) continue to detect motion. The occupant may manually turn OFF the lighting by pressing the ON/OFF button on any of the connected devices. If the room becomes vacant and the lights are ON, the lights will turn OFF when the unit that detected motion last times-out. Works with incandescent, LED, fluorescent, CFL, MLV, ELV or 1/6 HP motor load.