The RCA Smart Multi Sensor enables lights with compatible drivers to become wirelessly controllable using the RCA Sensor Connect App. Maximize energy savings with daylight harvesting and motion detection. Usable to max 11.5 ft. The RCA Smart Multi Sensor is able to detech motion up to 23 feet away, and light up to 11.5 feet away. Retrofit options are available for commercial downlight, the T8 Tube, and RCA Troffers.