Uses Passive Infrared (PIR) technology to sense the movement of heat-emitting bodies. Provides auto-on/auto-off or bypass feature allows the sensor to perform as a traditional switch, manual-on/auto-off operation. The sensors automatically turn lights off after a space becomes vacant and a preset time delay elapses. 3-way wiring without neutral. Works with incandescent and fluorescent magnetic ballast lighting load types only. Compatible with any decorator-style or decorator screwless wallplate. Ivory.