This Intermatic K4721D89 Stem and Swivel Mount Thermal PhotocontrolGo to product viewer dialog for this item. is designed for reliable automatic dusk-to-dawn lighting control in residential or commercial applications. Operating at 120 VAC, it features a mechanical bimetal switch with a cadmium sulfide photocell and a built-in delay function that prevents unwanted off-switching caused by passing headlights or lightning. Encased in a high-strength, UV-resistant black polycarbonate housing, the unit is equipped with a adjustable 1/2-inch-14 NPSM threaded stem, locking nut, washer gasket, and 6-inch wire leads for quick integration into standard light fixtures and electrical boxes. It supports up to 900 watts tungsten or 1100 VA magnetic ballast loads and is compatible with incandescent, fluorescent, and HID bulbs. This item is in used fair condition