Description: Led driver transformers are needed instead of standard 85-265vto 12v transformers commonly used for halogen bulbs. Without an led driver transformer there is a possibility that the led lamp will either not work or flicker. The 18w maximum rating for this LED driver must not be exceeded. Several LED bulbs can be run with this LED driver, for example you could run up to 6 x 3w LED bulbs. These LED drivers/transformers are suitable for all G4, MR11, MR16/GU5.3 LED bulbs & also most LED strip lights, just make sure the maximumwattage of the strip light does not exceed the 18w max output power of the LED driver. Specification: Input voltage:AC85-265V 50/60 Hz Output voltage:DC12V 1.5 A Wattage:18 W Max temperature: 80℃ Max ambient temperature: 40℃ Working temperature:-10℃-50℃ Dimension:92*41*20mm Package Included:1*18w LED driver