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USB Amperemeter3 in1 Description: QC2.0 3.0 Measuring range 4-20V(V)Input voltage 4-20V(V)Output voltage 4-20V(V)Ambient temperature -10-60( °C)Voltage measurement error 1%Shell color: Black Easy to use: The IN-input connects to the output port of the chargerReset-clear key, press 3-5 seconds to clear the screenOUT-output connected to the USB port of the data cableInput voltage display window (4-20V), accuracy +-1%Charge current display window (0-3A), accuracy +-1%Battery capacity display window (0-99999mAh)Working hours display window (0-99H) unit minutesWorking time and space display memory function after power offPackage included: 1 x Electrical Power USB Capacity Voltage Tester
