BESTOPE Voltage Testers (C-Blue)

Simple and practical; Small size, convenient to carry, no external power needed, plug and play; Can detect USB 1.0 and 2.0 output of power supply, charger, computer, car charger and mobile power, easy to measure out no-load voltage, loading voltage and devices working current of USB output, and to judge whether the performance of the charger and charging cable meet the requirements; Simple to operate; Suitable for 3~7.5V / 0~2.5A, 3 digits digital USB voltage and current alternate display, the result clear, great for factory, laboratory and normal users.