A better life because of you are wonderful.Features:100% Brand new and high quality!!Led driver transformers are needed instead of standard 240v to 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. If an led lamp does work with a normal transformer， the led light will have a significantly reduced life and can fail after only a few hours.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. This LED drivers/transformers are suitable for MR11 MR16 LED bulbs and also most LED strip lights， just make sure the maximum wattage of the strip light does not exceed the 18w max output power of the LED driver. Specifications:LED driver transformer for MR16 / MR11 12V LED bulbsFor indoor use onlyPower: 0.5W - 18WInput: 85-265V 50HzOutput: DC 12V 1.5ADimension: 90 x 40 x 20mmMax case temperature: 80°CMax ambient temperature: 40°CColor: WhitePacakge includes:1 x 18W LED Driverhave a best day，