Let-60 Watt class 2 12 Volt ac standard version transformer features electronic internal resettable protection. Patented auto heat regulation also acts as overload protection. Auto-reset thermal cut-off at 125c. Waterproof potting. Aluminum casing. Maximum load: 60 watts. Minimum load w/o dimmer: 10 watts. Minimum load with dimmer: 20 watts. Input: 120 volts, 60 hz. Input current at max load: 0.5 amps. Output at maxload: 11.75 volts, 40 khz, 5 amps. Dimmable with low voltage electronic dimmer. UL and cUL listed. Lead wire is 6 inches long. 2 inches wide x 1 inch high x 3/4 inch deep.