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