NSI Tork® Photocontrol, Electronic Instant Response Utility Grade, 105 to 305 VAC, 50/60 Hz, 1000 W Tungsten, 1800 VA Ballast, 360 J Arrester, 3 to 5 s, Molded Sealed IR Sensor, 1.5 FC (ON), 1.5:1 FC Average (OFF) to (ON) Ratio, Environmental Conditions: -40 to 158 deg F Operating Temperature, 6000 Operating Cycles, Twist-Lock Mount, Polycarbonate, Blue, 2.187 in H x 3.187 in W