UL certificate CE&RoHs approval energy efficient stable and durable equipped with short circuit,open circuit,over heated,over loading and so on protective circuit,high accuracy in constant current. Dimension 18MM,13.5MM,9MM, Input AC/DC12V-24V,Output power 1W-5W,320/650MA,Working life-span 50000-80000 hrs,Application MR16 spot light LED driver