The Kaoyi KAI-20E12VAD Constant Voltage LED driver is suitable for driving 12 volt dimmable LED lights between 12 and 20 watts. It is therefore perfect to replace a transformer when changing from incandescent or halogen lighting to energy-efficient LED.
The driver is suitable for dimming by means of phase on and phase off and has overload and short-circuit protection. 

See further specifications below.

Constant Voltage
Input: 220-240Vac 50/60Hz
Output: 12Vdc
Rated Power: Min. 12W - Max. 20W
Power Factor: 0.90
Dimmable through leading- and trailing edge
Overload and output short circuit protections built in
Dimensions: 156x38x29 mm