SMAKN&reg; AC 110/220V DC 12V/10A 120W Switch Power Supply Converts 220V AC power to the 12V DC power required by the LEDs and protects them from line-voltage fluctuations Protections: Over Current, Over-voltage and Short Circuit Output voltage is accurate and stable and generate low ripple and noise Heat-dissipating Method: Natural Cooling/Fan Cooling/Blower Cooling Mainly used for CCTV camera, LED flexible strip, LED decorative lighting, building lighting, stage lighting, LED display and home appliances