... power supply 1/ AC INPUT POWER 110V or 220V 2/ Out put: 5V/1V/24V 3/ CE ROHS certificate. 4/ Two years warranty. LED power supply ... , UL60950, EN60950EMC standards ............................... GB9254, EN55022 classB, EN55024EN61000-3-2,3, EN61000-4-2,3,4,5,6,8,11Cooling method ............................... convection led power supply