The Amax HD150-120 is a 150w 12Vac dimmable electronic transformer.It is for 12V halogen lamps only. It is fully dimmable with standard incandescent and low voltage dimmers. The Amax HD150-120 is similar or equal to the 316-0002, KL-150, SL-728, SET150UL, WH-1501E6A, Wang 200213, Wang WH-150AE6A, ...