Best Pro Lighting’s low voltage, professional grade, landscape lighting 300-Watt transformer with stainless steel housing, multi tap 12-Volt, 13-Volt, 14-Volt, 15-Volt, photo cell and timer. The Stainless Steel 300-Watt transformer, which comes with a digital display for easy programming with a photocell that turn your lights on at dusk, with an option of waiting 1-9 hours to turn them off, Auto to use from Dusk to Dawn or with an option of constant On to override the photo cell and connect it to a plug in timer. Best Pro Lighting’s 300-Watt transformer can be used both indoors and outdoors and is compatible with both halogen and LED bulbs. This 300-Watt transformer is UL Listed and has AC output. Best Pro Lighting’s entire Transformer lineup comes with a lifetime warranty. This low voltage transformer’s usage is for low voltage landscape lighting fixtures.