Feature●Press the small circle button and the data can then be tested, the next data will be zero●High precision current calibration, high voltage and low voltage alarm●It is easy to find the problem of charging digital devices. Any product that has USB such as tablets, laptops, cell phones, cameras, chargers, etc●No professional wiring required, easy to use, just plug in the USB port, discharge and charge, monitor your devices working current and voltage, count battery capacity●USB port and micro USB interface for testing devicesDescription
USB Voltage Current Detector LCD Micro Checker Tester Monitor Reader Meter Computer LCD Voltage Detector (White) Practical