Use code OZTFQYV9

The USB monitor can display voltage, current, capacitance and power, press the button to switch among seven different display modes
Has two output: Output I is used for both charging and data transfer, Output II is for large current fast charging
Multifunctions: capacitance checking, capacitance clear, over- and under-voltage alarm, over current alarm and short-circuit alarm
The display is clear and plenty bright enough, two color display with RED & BLUE; High accuracy and ultra-low resistance
A great tool for testing phones, tablets, USB ports, power supply and charger outputs, and current demands of USB devices