Mulberry photo control 1800 watts tungsten , 1100va ballast, 15 amp tungsten, 9.1 amp ballast. Operating ambient temperature range -40Ft to 149F. Stem mounting: 1/2"-14 threaded swivel. UL Listed. Ideal for wall packs, post lamps and security lighting. Automatically turns outdoor lighting on at dusk, off at dawn. 5 year warranty.