PD Trigger Voltmeter Ammeter Current And Voltmeter USB Tester QC4 + PD3.0 2.0 PPS Fast Charging Protocol Capacity Tester ,Portable

1.77 inch full color LCD screen USB3.0 high-speed transmission 6-Digit display high precision Cabte resistance detection uses the differential pressure method to measure the internal resistance of the cable Use with constant current load,Easily detect the internal resistance of the cable.