Wiring Device-Kellems, ATP1600WRP, Occupancy Sensor Switch With Photocell and Relay, Adaptive Dual Technology Low Voltage, 24 V DC, 33 mA, Passive Infrared Sensor, 1600 sq-ft Coverage, 110 deg Viewing, 8 to 40 min Time Delay, Wire Lead Connection, Wall Mounting, 32 to 104 deg F, ABS, White, 2 in W x 1-1/2 in D x 6 in H Dimensions