About this item Dual input voltage: AC 110V/220V. Output: DC 12V 20A max, Output voltage is adjustable ±15%. IN-DOOR USE ONLY! Three sets of output channels. With three independent output channels, it can power more devices. The maximum output of each channel can reach 20A 240W. Total output power of the three channels is 20A 240W. Works with devices that draw less than 20A, such as DC 12V 1A~15A. The max use of power should be no more than 80% of the full loads 20A 240W. Over Voltage Protection, Overload Protection, Over Current Protection, Over Temperature Protection, Short Circuit Protection. High quality, widely used in industrial automation, electronic equipment, LED display, LED lighting, LED strip, CCTV cameras, security systems, computer projects, home appliances, etc. Why does the LED power supply stop working? Maybe the overcurrent protective switch (in the power supply) has disconnected. Please unplug your AC cable; it's important! Then wait about 10 minutes. It will auto re