- Easy to measure the USB output vollage and the device input current or loader voltage.
- Availabe for every USB electronic product,such as PC USB,home charger,car charger and so on.
- Plug and ,light and handy,easy to carry and no need external power
- Through "DR CHARGER",you could clearly know the condition of the charger phone,usb cable and every USB device.
Voltage:DC 3.5V-7V,error 0.1V