The Precision Lighting 27886 thermal type swivel photo control gives you convenient, dusk to dawn directional control of security lights, decorative lights, and walkway lights. Only 5.2 inches in length, it has a thermal switch and is raintight with a 1/2-inch threaded rubber gasket conduit and zinc locking-nut. The polycarbonate enclosure and eye make it ideal for use outdoors. It comes with a 6-inch lead to attach to any 16 AWG wiring. Its superior construction keeps it functional in temperatures ranging between -40 degrees Fahrenheit and 158 degrees Fahrenheit and in humidity up to 96%. It has a 1/2-inch CDS photocell with automatic on/off settings at 0-20Lx ON (dusk) and 30-60Lx OFF (dawn). With a lifespan of 6,500 cycles, this unit works on 208-277 volt systems. Paint your home in beautiful lighting with this automatic photoelectric lighting control.