PS12: 300W DC Electronic Transformer and Autofusing Circuit.Light weight transformer with a slim profile. In the event of a fault condition the transformer can be reset from the wall switch. Use where dimming is required with a electronic low voltage dimmer. Primary uses are for residential, hospitality and commercial applications. The PS12 is UL listed as a Low Voltage Lighting Power Supply Center. The warranty on this power supply is 2 years.