Item Descriptions:

USB is not recognized ... The smartphone is not charged ... What exactly is the problem?

We can solve such questions, the USB current voltage checker corresponding to double-sided insertion appears glittering!

I do not know whether the USB device side is bad or there is a problem with the power supply capacity of the USB port of the personal computer when it does not work even if you connect a USB device.

In that case, if you check the output, you can easily understand the situation.

Although there is output from the personal computer, if it does not work when connecting the cable etc, it can be judged as a defect such as cable breakage.

Performance may change greatly with a combination of mobile battery, USB charger, and cable to charge smartphones and tablets.

I can not confirm the output side capability, the voltage that can be flown by the cable, etc, but I can check with the numerals clearly using this measuring instrument.

Have you ever felt that charging speed is different depending on the USB port and cable you use?

Or are you concerned about the operation of the USB battery?

With this USB doctor, it is possible to measure the voltage and current value from the port.

【how to use】

Key button long press: all reset

(When you press and hold the mode changeover button at the top, their values ​​are reset,

Start measuring from 0 newly.

Key button short press

1 time: Switch information display screen

Please do the following operation on the screen where "Electric" is displayed.

2 times: Ah reset

3 times: Wh reset

4 times: Reset the count up timer

5 times: Timer setting mode (1 - 24 h / AUTO / Always ON) → missed mode with no operation for several seconds

6 times: language switching (Chinese / English)

【Measurement range】

Voltage U = 3-30 V, current I = 0 - 5.1 A.

Fast charge QC 2.0 / QC 3.0 / BC 1. 2 / MTK - PE / iphone 2.4 A supported.

Voltage: 3-30 V (Accuracy: 0.01 V)

Current: 5.1 A (Accuracy: 0.01 A)

Capacity: 0 - 99999 mAh (Accuracy: 0.001 Ah)

Power consumption: 0 - 9999999 mWh (Accuracy: 0.001 Wh)

Time: 0 - 999 h 59 min 59 s (Accuracy: 1 s)

Power: 0-299.999 W (Accuracy: 0.001 W)

Temperature: 0 - 80 ° C

Resistance: 1-999.99 Ω

USB D + voltage: 0 - 2.99 V (accuracy: 0.01 V)

USB D - Voltage: 0 - 2.99 V (Accuracy: 0.01 V)

Time: 0 - 999 h 59 min 59 s (Accuracy: 1 s)

Temperature: 0 - 80 ° C

Size: 67 mm * 24 mm * 14 mm

In case

【Package Contents】

1 * USB current voltage checker

Features:

• Please enter model number Confirm this is compatible:
• This product is the latest specification USB checker that can measure up to 5.1 A of current up to voltage 30 V corresponding to Quick Charge 2.0 or 3.0 of rapid charging standard which is becoming popular recently.
• Just by connecting USB devices, you can see the voltage value and current value at a glance.
• Since the decoupling memory function is attached, data can be recorded when disconnecting.
• In addition to voltage and current, power (voltage × current), elapsed time, current amount mAh (charge capacity) are also calculated and displayed in real time
• With compact design, you can easily carry it anywhere.
• You can switch the display by pressing the mode change button KEY at the top.
• Press the Key button for a short time and switch the information display screen once.
• Press and hold for data reset.
• When you push the button six times, it will become a bit and change the Chinese / English display.
• Double sided USB connection possible, easy to use.
• Compact and portable.
• Warranty period: 12 months

Product information:

Shipping Weight: 31 g

Package Dimensions: 3.00 x 9.40 x 12.90 cm