USB meter color screen usb tester charger detector voltmeter ammeter
1 Voltage 4-30V
2 Current 0-5.1A
3 mAh: 0-999999mAh
4 mWh: 0-999999mWh
5 Timing: 0-99 hours
6 Power: 0-150W
7 Charging internal resistance: 0-999.9 ohm
8 groups: 1-9 groups
9 Internal temperature: 0-80°
10 D positive voltage: 0-10V
11 D negative voltage: 0-10V
12 Function buttons
13 USB
14 Output USB
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