Matek USB output Current Monitor

The UPM can be used to measure the output performance of any USB charging adapters,
PC USB, Car USB chargers & Power banks etc.  
It can also be used to diagnose faulty USB ports,
evaluate the quality of USB cables & the capacity of portable power source.

Features
Low power MCU with 10bit ADC
25x15mm segment LCD shows clear and accurate numerical readings
6 modes allows the user to check real-time Voltage,
Current, Watt, Capacity, Total capacity & Time.
Very low current sensing resistor (10M  ) for less voltage drop
Over-voltage protection & alarm (Max 5.7V)
Over-load protection (Max. 3A)
Self-closedown function to avoid the device is over charged.

Specifications
Working voltage range : 4.5~5.7V DC
Working current range : 0~3A
Voltage precision : +/-0.5%, Resolution : 0.01V
Current precision : +/-1%, Resolution : 0.01A
Current sensing resistor : 10M
Standby current : 20mA
Size & weight : 43x25x11mm, 15g