USB Tester DC Power Meter 4-30V Digital Voltmeter Volt Meter Power Bank Wattmeter Voltage Tester Doctor Detector

Product selling point:

1. Using high-quality materials, the quality is guaranteed

2. Input USB can be inserted on both sides

3. Precise measurement

4. With overvoltage and overcurrent protection can be set arbitrarily

5. Delicate and compact size

Parameter:

Voltage: DC4V-30V (overvoltage protection can be set arbitrarily)

Current: 0-5A (overcurrent protection can be set arbitrarily)

Timing: 0-99 hours

Timing: 0-24 hours

Power: 0-150W

Power: 0-999.9Wh

Capacity: 0-99999mAh

Internal resistance: 0-999.99 ohms

Instructions:

Description of timed shutdown settings

A single tap on the key screen shows this is. Press and hold the button for three seconds and the numbers on the screen will flash. Briefly press the button once again. Add 30 minutes delay shutdown. Press and hold the button for three seconds to save the parameters you set.

Overvoltage Protection Setting Instructions

A single tap on the key screen shows this is. Press and hold the button for three seconds and the numbers on the screen will flash. Briefly press the button once again. Apply 0.5 volts. Press and hold the button for three seconds to save the parameters you set.

Overcurrent Protection Setting Instructions

A single tap on the key screen shows this is. Press and hold the button for three seconds and the numbers on the screen will flash. Briefly press the button once again. Add 0.5A. Press and hold the button for three seconds to save the parameters you set.

Accumulated working time, power, capacity, when returning to the main screen, press and hold the button for 3 seconds to clear the retained data.

Package list:

USB current and voltage tester*1