Westek LC120BC-4 TwistlLock Light Control, CFL, Incandescent, LED Lamp, 120 V, Clear

The twist lock light control is ideal for road, parking lot and driveway lighting with NEMA 3-prong locking type receptacles. It gives an added measure of security by automatically turning on your light at dusk and off at dawn. The time delay feature eliminates flickering and the encapsulated photocell can withstand temperatures of -50 to 150 deg F.