Specifications:
Input voltage range: DC 3.5-12V
Output voltage range: DC 1.2-24V adjustable
Output Power:
When output voltage is 1.2v~2v, please use it within 2W;
When output voltage is 2v~20v, please use it within 3W;
When output voltage is 20v~24v, please use it within 2.5W.
Display: 3-Bit digital display
Size: 80 x 20 x 14mm / 3.15 x 0.79 x 0.55"

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.

Note:
Short press - turn on/off the output.
Long press - turn on/off the display.
clockwise - increase voltage;
counter-clockwise - decrease voltage.

Package Included:
2 x USB Buck Boost Converter
2 x Micro USB Cable