Converts AC voltage to 5V DC. LED Indicator. ^^ Output Current 40 Amp, Power 200 Watt. Efficiency more than 80%. ^^ Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection ^^ Widely used in Industrial automation, LED display, communications, CNC Stepper, etc ^^ Efficient, long life, stable, and reliable - JoyNano Quality Warranty