The outdoor low voltage transformer is equipped with a detachable photocell sensor, so landscape lighting will turn on automatically at dusk and off at dawn. 6ft photocell sensor cable enables you to install the transformer indoor outdoor. Light control timing, 1-12 hours countdown, with this mode, the transformer will turn on at dusk and automatically turn off 1/2/3/4/5/6/7/8/9/10/11/12 hours later. Memory function, the transformer remains the timer mode you selected before, even when power outage. Advanced technology with 3 individually controlled terminal output zones, allows you to control your front porch lights, backyard lights and landscaping lights separately. Press the "Zone" Button to choose specific output for customizing your house lighting. Material: Metal.