WattStopper® Dual technology wall switch occupancy sensor turns lights off and on based on occupancy. It combines the benefits of passive infrared (PIR) and ultrasonic detection technologies. Replaces existing wall switches and fits behind a standard decorator wall plate. High sensitivity and dense coverage for exceptional performance. Allows multi-way control from one of up to four control locations. colour-matched lens and low profile for appealing design. Optional neutral connection with break off tab to expose neutral terminals. Defaults to manual-on operation for maximum energy savings. Load: 0 to 1500 W ballast and LED, 1/6 HP.