USB Charger Doctor ampermetru / voltmetru afisaj 7 segmente cutie albastra

It can measure the USB-powered devices.
Easy to use and practical.
Compact and easy to carry, no additional power supply, plug and play.
It can easily measure the output voltage of the USB port and the device operating current or load voltage
Detect any USB charger such as PC USB, home charger, car charger.
Wide range of applications, any phone, any electronic product, Easy to use.
Suitable for factories, laboratories and personal use.
Can measure usb interface, cell phone charger, u disk and other products or power supply situation.
Voltage: 3.5V-7.0V error 0.1V
Current: 0A-3A error 0.01A
Size: 52mm x 33mm x14mm(approx)
Color: Blue