1.One button to turn off the output; 2.Supply ON/OFF display screen; 3.Support low mode; 4.Support mode; 5.Support both standard USB and -USB and pads input voltage; 6.Potentiometer with rotating handle. Description: USB boost/ supply module, powered by USB, adjust potentiometer to get the required voltage. Parameters: Condition: New Type: Voltage Regulator 1.Input voltage: DC 3.5-12V; 2.Output voltage: DC 1.2-24V; 3.Output : Input 1.2-2V,output within 2W; Input 2V-20V,output within 3W; Input 20V-24V,output with in 2.5W; 4.Display: 3Bit digital tube display; 5.Size: 80 * 20 * 14mm. steps: 1.Input voltage from Standard USB or -USB or'VIN+'and'VIN-'; 2.Turn ON display screen; 3.Adjust potentiometer to get the required voltage; 4. load. Application: 1.Ordinary supply; 2.Battery charger; 3.LED drive ; 4.Instrument voltage display; 5.Test meter; 6.Circuit test; 7. conversion. color: blue Material: metal + plastic Package Contents: 1 * Module Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.