설명:

Input / output voltage：3V-9V

Voltage resolution: 0.01V

Input / output current: 0A-5A (Recommended range 0-3A)

Current resolution: 0.01A

Accuracy: plus or minus 1%

Line loss: about 0.1 ohm

Test content: voltage, current,

Communication function: Yes

Data calibration function : Yes

USB voltmeter ammeter can easily measure the operating current USB port output voltage and the device! (Note: it can only accurately display the real-time voltage and current electrical work, do not have discharge device function, which can not be set to a certain voltage discharge certain current compact, no power, and other ancillary equipment that! Plug and Play! also detect any USB charger (computer USB, home charger, car charger) charging current and voltage in order to determine the performance and the performance of the charging line charger meets the requirements! wide application, any phone, any electronic product, you can use, easy to operate, suitable for factories, show demos, labs and users!

Features:

1, the product can measure the USB-powered devices empty, voltage loads, USB terminal device while operating voltage and current.

2, current, voltage cycle, easy to use and practical.

3, Compact and easy to carry , no additional power supply