Alpine 60 watt transformer with constant on and photo cell with timer provides 12V (volts) AC, use for garden lights, submersible pond lights, pumps. Once it gets dark, the photocell and timer will immediately activate. Settings on dial: off, on; photocell: automatic, 4, 6 or 8 hours. 12V (volt) connection is screw terminals. Circuit breaker for short circuit protection on output. Use indoor/outdoor, includes 4-light quick connect cable. Wall mountable, includes screw and wall anchor. Do not exceed the wattage of the transformer in any combination. Alpine two year manufacturer warranty.