Tired of manually turning your outdoor lights on and off? This 2-pack of HQRP photocell sensors automates it all! They're wire-in, thermal type sensors that detect when it gets dark and automatically turn your lights ON, and then turn them OFF at dawn. Each one is rated for 120V AC and can handle a load up to 1800W (or 5A for electronic ballasts), so they work with a wide variety of lights: LED, CFL, HID, Induction, Incandescent, Mercury Vapor, and High-Pressure Sodium. The fail-safe mode is set to ON (so if the sensor fails, your lights stay on for safety). There's a built-in time delay of 30-180 seconds to prevent flickering from things like car headlights. They come with 18AWG wires about 16cm long for easy installation. They're UL listed for safety and quality assurance. Perfect for garage lights, barn lights, street lights, security lights, or any outdoor fixture you want to automate. Save energy and add convenience!