1LOAD TEST MODULE: By controlling load resistance, this load test module can get different currents to test the power. 2CLEAR INDICATORS: Equipped with multiple indicators, the USB load module can clearly display the operation statues. 3WIDE APPLICATION: Allows for flexible application in testing electronic equipment, power bank, mobile power, charger. 4GOOD WORKMANSHIP: Crafted with excellent workmanship, the USB load tester is not prone to cold joint, very durable. 5USB PORT: Enables easy operation, just plug and play. Also very convenient to carry with small size and light weight. Item Type: USB Load TesterMaterial: Printed Circuit BoardWorking Voltage: DC 5V (USB power supply)Function: A USB discharge load tester designed according to Ohms law (voltage/resistance value = output current), through the two switches above to control load different power resistance values, and obtain 3 kinds of currents, respectively 1A, 2A and 3A. Onboard corresponding different resistance indicator lights and power indicator lights are very clear. Simple to use, you can test the power bank and mobile power charger. Applicable Scenarios: For electronic equipment, power bank, mobile power, charger. 2 x USB Load Tester