Power Cords & Cables PCC, PCC-03550, Indoor Light Lamp Socket With Photocell Control Sensor, Turns Light On At Night Dusk, Giving Your Home That Lived In Look, Turns Light On At Night Dusk & Off At Dawn, Works With Incandescent Fixtures Only, ETL Listed. 150 Watt Max. It bacomes a common light when turned on auto on / off mode. Easy installation for any household lamp sockets, indoor use only.