The Kable Lite 300 Watt 12 Volt Electronic Surface Mount Transformer is a single feed transformer which converts standard 120 volt line voltage to 12 volts to provide the necessary voltage for powering a Kable Lite low-voltage lighting system. Finish available in Satin Nickel. It can power lamps totaling up to 300 watts. The transformer is concealed inside a decorative housing with a fast acting secondary circuit breaker that will safely turn the system off when a short occur. Once the short has been removed the unit can be reset by simply flipping the wall switch off and back on. ETL listed. 9.1 inch width x 3.8 inch height. The shortest rigid standoff than can be used with this surface transformer is the 5 inch rigid post standoff, sold separately. For use with Tech Lighting 12 volt halogen pendants or heads, sold separately. IMAGE SHOWN IN WHITE.