Description

This is a high quality USB intelligent monitor . It can measure voltage, current, power and capacity and automatically save data after power interruption

It can clearly display all the data and monitor charging data constantly. 

The operating current and the output voltage charge-discharge capacity, performance of USB port and devices ( PC USB,cell phone charger, car charger , mobile power , etc. ) can be easily measured and judged.

Wide range of application; Easy to use and take; No additional power supply; Plug and play.

How to use: First, insert the digital devices into the USB Digital Voltage Measuring Instrument; Then insert the tester into chargers; Finally the charger is plugged into the socket.

Specifications

Color:show as pictures.

Type:Digital Voltage Measuring Instrument

Model: KWS-V21

Voltage: 4-20V+/-1%

Current: 0-3A+/-1%

Time: 0-99H

Accuracy: plus or minus 1%

Line loss: about 0.1 ohms

Size: 59*23*13.5mm

Weight: 20g

Introduction

1. IN-input is connected to the output port of the charger

2. RESET-clear button, after pressing for 3-5 seconds, the screen display will be cleared

3. The OUT-output end is connected to the USB port of the data cable

4. Input voltage display window (4-20V) accuracy +-1%

5. Charging current display window (0-3A) accuracy +-1%

6. Battery capacity display window (0-99999mAh)

7. Working time display window (0-99H) unit minute working time and empty volume display, with memory function after power failure