With this handy USB power supply you can get any voltage from 1V to 30V and up to 2A current. Just plug it into your USB power bank or USB phone charger. Then adjust the voltage using the dial knob of the potentiometer. Built-in output voltmeter with digital LCD display with 0.1V resolution.
Great for electronics and science experiments where you need an adjustable voltage power supply.
Specifications:
⚠ Safety warning
CHOKING HAZARD