This light control offers a measure of safety, security and convenience by automatically turning your candelabra base light bulbs On at dusk, Off at dawn. It can simulate home occupancy, ends coming home to a dark house; No flicker technology, screws in, no wiring required; Automatically turns incandescent lights On at dusk, Off at dawn; Works with all incandescent candelabra-based bulbs; Spring loaded contact allows for proper sensor orientation.