Larson Electronics DNS-120-10A 120V Day/Night Sensor for 120V AC LED Lights Up to 1000 W 120 volt day/night sensor for 120 volt ac LED lights up to 1000 watts This day/night detecting sensor that automatically turns on an attached light Fixture when the level of daylight drops this photocell can detect ambient Lighting and tell whether it is night or day outside Manufactured in United States