This product can measure the USB power supply of the empty device, voltage load, end device USB voltage and current work. current and voltage display of the cycle, easy to use and practical. Compact and easy to carry, no need to connect another power supply. voltage and current turns on the display, cycle time is 5s.It can be easy to face the USB output voltage and work current equipment; small size, no power supply and other auxiliary devices, plug and play.Voltage detection can not be standard DC5V mobile phone charger
Specification:
Error: Voltage ± ± 1% Current << 2%
Voltage range: DC 3.3 V to 7.5 V
Resolution: 10mV 10mA voltage