Ideaworks Automatic Lamp Sensors - Automatically Illuminates your Home - Fits Any Standard Lamp - Set of 2 AUTOMATIC ILLUMINATION: Automatically turning on at night and off at dawn, never come home to a dark home FLEXIBLE FIT: Since the sensors can fit any standard size lamp socket, you can turn your lamp into a home security light system CERTIFICATION: The sensor is UL and CE approved SET OF 2: Automate two of your lamps for convenience