The Kable Lite 75 Watt 12 Volt Magnetic 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. 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. 5.1 inch width x 2.2 inch height. The shortest rigid standoff that can be used with this surface transformer is the 2.5 inch rigid post standoff, sold separately. For use with Tech Lighting 12 volt halogen pendants or heads, sold separately.