Mini Portable LCD Digital USB 3V-8V Voltage and Current Detector Tester

Mini Portable LCD Digital USB Voltage and Current Detector Tester Features: small sized, easy and convenient to carry It can measure current and voltage of the power supply equipment with USB port Plug and play, no extra power supply needed. Wide range of applications, any phone, any electronic product, such as PC, laptop, power bank, etc, easy to use. Suitable for factories, laboratories and personal use Workable range: U= 3 - 8V, A= 0 - 3A Resolution: Voltage 10mV, current 1mA Error Range: Voltage