USB Current Voltage ammeter Tester

Weight 0.03 kg
Dimensions 7.32 × 2.8 × 1.5 cm
Voltage Measuring Range

3 ~ 9VDC

Current Measuring Range

0 ~ 3A (Up to 5A Max)

Interface USB Ver

USB2.0, USB3.0

No of Output ports


Device Type

Portable Device

Feature 6

Enabled to measure USB devices at no load and overload condition, also for USB terminals testing.

Feature 7

Current and voltage display in turn, easy and comfortable to use.

Feature 8

Small and portable, do not need other power supply

This is USB Detector Current Voltage Tester. A very useful device for USB port checking and charger use it, you can check if the USB port is active or if a battery of the external device is a charge or if the current is not exceeding limits. It comes with a bright LED Segment display.
This tester has one input and two output ports where you can check one device at a time or two devices combined. This product is known as 0.28inch 0-100V Three Wire DC Voltmeter Red, 3 Wire LED Voltmeter, Ammeter, Charger Doctor, DC Voltmeter, Doctor, LED Display, Red LED Display, Three Wire DC Voltmeter Red, USB Charger, USB Charger Doctor, Voltmeter, Voltmeter.


  • Voltage Detector
  • Current Detector etc…