This led transformer driver is used to power low voltage 12v led bulbs and strip lighting led bulbs require a constant current to work properly sometimes a normal 12v transformer will work correctly with led bulbs but in some cases the lifespan of the bulb will be reduced this led driver is the perfect product to replace the 12v transformer which is currently powering your existing low voltage bulbs all orders at led hut have a 30 day hassle free returns and 5 year warranty our bulbs ar