Bsod (8-12)x1W Constant current 300mA high power LED driver AC 85-165V Output24-48V External Power supply led Ceiling lamp rectifier transformer ((9-12)W) Brand new and high quality,high power factor,low temperature rise,high efficiency It has no noise ,no flicker ,over-current protection and short circuit protection and comes with connection cables, easy to install. Mainly applicable to LED decorative lighting, building lighting, stage lighting, LED display and theatre. Just make sure the maximum wattage of the strip light does not exceed the max output power of the LED driver. These LED drivers/transformers are suitable for LED bulbs and also most LED strip lights