ITEM NAME:Discharge Interface Load Resistor USB with Switch 3A 1A USB Power Adapter Description: - Switch and usb interface design,there is a 1A/3A current button to switch 1A or 3A current discharging. - Pay attention to the high temperature generated in the work process of load resistance, please don't touch to avoid scald and stay away from flammable items. - The products can freely be switched with a switch, very convenient and easy to use. - USB load resistance, is mainly to do discharge test, if the charger or mobile power supply output current is 3A, load meter power is 5V * 3A = 15W, if the output current is 1A, then the power load is 5V * 1A = 5W. - With this accessory you can check the.Switch and usb interface design,there is a 1A/3A current button to switch 1A or 3A current discharging. - Resistance: 1A-3A. - The products can freely be switched with a switch, very convenient and easy to use.