Tork 3002 - Wire-In Photo Control, 208-277 Volt, 1000 Watt Durable, high impact Lexan housing. Photocell: 1/2" cadmium sulfide light sensitive element. Turn-on: 1 to 3 foot-candles; Turn-on/off Ratio: 1:3 Time Delay: Minimum 15 seconds. Switch Type: Single-pole, single-throw. Contact position at night normally closed