Charger Doctor USB Voltage and Current Meter

The Charger Doctor brand USB Meter detects both voltage and current passing through the device.
Great for checking the voltage and current supply to computer peripherals such as your beloved mechanical keyboard to
Display alternates between voltage and current readout every few seconds for hands free measurements.

Specs:

Voltage Range: 3.3v-7.5v
Resolution: 10mV | 10 mA
Works with all standard USB A ports.