This indoor socket provides an easy way to turn any lamp or indoor light fixture into a photocell-controlled light. Just install into any incandescent light socket, add the bulb and the light will turn on at dusk and off at dawn. Perfect for wall sconces, lamps used as nightlights and decorative lights. Never wonder again if you remembered to turn that light off! Plus, the socket will pay for itself due to energy savings and less frequent bulb changes because your light will only be 'on' when needed and 'off' in daylight. The Woods brand of timers and home controls bring simplicity to your life, by maximizing convenience, security and energy savings.