Lumatrol T-series wire-in photocontrol. Weatherproof Lexan housing or vandal proof die cast aluminium housing. Broad surface sensing element photo cell. External light level slide allows field adjustment between 3 to 10 ft candles. 1:3 ratio turn-ON/OFF ratio. Single-pole, single-throw, contact position at night normally closed switch type. Moisture proof, colour coded lead wire, wire length: 6 inch. 1/2 inch-14 thread and fits 1/2 inch knock out. Temperature range -40 to 158F.