Turn any polarized 2-conductor outlet in your home into a photocell-controlled one with this plug-in photocell. The photoelectric eye senses the absence of daylight and automatically turns on your lights or plugged in device. Do you have a decorative lamp on a high bookshelf that is a pain to turn on and off? Or a nightlight near the floor that you simply forget to turn off in the morning? Plug the lamp or nightlight into this socket and it will automatically turn on at dusk and off at dawn. Use for white noise machines, radios, fans, electric candles or other small appliances too. And realize some electricity savings as your lights or other appliances will only operate during the night. The Woods brand of timers and home controls bring simplicity to your life, by maximizing convenience, security and energy savings.