The AmerTac Outdoor Dusk to Dawn Floodlight Light Control OLC5CFLBC-4 features a long stem design that fits inside most flood lights, spotlights or enclosed exterior fixtures. It features a photoelectric sensor and turns compact fluorescent, LED, halogen and incandescent bulbs on at dusk and off at dawn, providing efficient and reliable lighting control. Perfect for outdoor use, this device is rated at 120 volts and 150 watts.