Equipped with a detachable photocell sensor, this low voltage transformer 200-Watt enables landscape lights automatically turn on at dusk and off at dawn in Auto ON/OFF mode, 6 ft. power cord of the sensor allows you to install the transformer indoor or outdoor. Easy to operate with the push of button, the voltage transformer is designed with 5 modes including Manual ON/OFF, AUTO ON/OFF, Photocell ON/ timer OFF, timer ON/OFF and TEST, meet all your setting needs and maximize energy savings. Made of high quality metal material, this low voltage lighting transformer is durable and sturdy enough to resist rain, snow, dust and corrosion, lasts for years whether mounted on inside or outside walls, manual reset circuit breaker will automatically trip when overloaded to ensure safety, ETL Listed.