The Kable Lite 100 Watt 12 Volt LED 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 or White. It can power lamps totaling up to 100 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. 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 LED pendants or heads, sold separately. As a general rule when using LED fixtures, it is not recommended using greater than 70 percent of specified maximum wattage on the transformer due to inrush current.