KWS-V21 QC2.0 USB Current Voltage Tester Charge Detector, Multimeter, Power Capacity Meter

1.Simple and useful voltage and current USB multimeter supports QC2.0 fast charging, and lets you clearly know the charging status of your device at the same time, so that it can display voltage, current, time and capacity of your device by LCD.2.The USB multimeter can be used as a charger detector for your car charger, mobile power, desktop PC, tablet, laptop, mobile phone, charger, etc. Which can ensure the safety of the cargo.3. The item can store data automatically when the power is off, and you can reset the data by pressing reset for about 3s.4.Only for USB 2.05. No battery, no on / off switch, plug and play6.Voltage range: 3.5-20V7.Resolution: 0.01V 0.01A 1mAh