Photo Control, 105 to 305 V ac, <0.5 W @ 277 VAC, 2.97 in Length, 1.3 in Width, 2.721 in Height, Sensor And Relay Swich Switch Type, Non-Drifting Silicon Sensor, -40 °F Operating Temperature, +158 °F Operating Temperature, Stem And Swivel Fixed Mount, 8 yr Warranty, 0.3 lb