Input: 110V/220V AC; Output: DC 24V 20A max. The output voltage can be adjusted by 10%. Three sets of output channel. Protection function: overload protection, over voltage protection, short circuit protection, this protection protects your load well. NOTE: Before use, please select the input voltage 110V/220V according to your local voltage. To prevent damage, the switch is on the right side of the item. It comes with a built-in fan and many holes in the metal case, which makes the heat dissipation more effective . Switching power supplies are widely used in industrial automation control, LED lighting, industrial equipment, communication equipment, electrical equipment, air purifiers, electronic refrigerators , LCD displays, communication equipment, audio-visual products, security monitoring, computer enclosures, digital products and equipment and other fields. It comes with a built-in fan and many holes in the metal case, which makes the heat dissipation more efficient. Metal case, good heat dissipation, built-in indicator light. 100% full load burn-in test Constant voltage LED power supply, AC 170-260V input, DC 12V, 50/60Hz output. (Not compatible with CONSTANT CURRENT LED lights).Advanced circuit board provides overpressure, overcurrent, overload and short circuit protection.Easy to install. Static power consumption with high power factor and low calorific value. Compact design provides application versatility for LED strips, MR16 bulbs and other lighting needs. Maximize performance and longevity by keeping charge below 80% of PSU capacity. LED lights up immediately after power on, no waiting, no flickering, no interference, no noise. AC input: 170-260 volts, DC output: 12 volts, 150 watts or 300 watts, 6.25 amps or 12.5 amps. This 12V LED transformer driver is suitable for constant voltage LED lamps such as LED strips, MR16 , G4, GU5.3 or CCTV.