LTH Power supplies feature universal A/C input, LED indicator for 'power on', 100% fully load tested and 5 year warranty. Short circuit protection. No external fusing required. Smallest dimmable Class II hardwire LED dimming magnetic power supply on the market that works with conventional low voltage magnetic wall mount dimmer with on/off switch. Features include high efficiency, excellent load regulation and no wattage de-rating under 100% load. There is no minimum load requirements for this transformer/driver.