The Precision Lighting 27873 swivel thermal type photo control gives you convenient, dusk to dawn directional control of walkway lights, parking lot lights, and security lights. This thermal switch 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). The unit works on 110-130 volt systems and has a lifespan of 6,500 cycles of use. Create dramatic lighting around your home with this automatic photoelectric lighting control.