Over load protection, over voltage protection, short circuit protection, this protection will protect your load well. Input: AC110-220V, Output: DC 0-48V adjustable, Maximum output current: 10A. Made of high quality metal,which is durable and long last.NOTE: before using, please select the input voltage 110V/220V according to your local voltage, to avoid damaging, switch is at right side of the item. LED display shows you real-time voltage, which makes it more convenient for you to adjust voltage. Built-in cooling fan, over temperature protection, overheating automatic shutdown protection. Widely used in Industrial automation, Radio, Broadcasting, LED display, communications, Security cameras, Lighting, Computer.