Yeeco USB steeper regulator

Yeeco USB Power Supply Module Buck Boost Converter 5V Step Up Step Down Voltage Regulator to 3.3V 9V 12V 18V 24V USB Power Supply Module.

Instructions
1. Button
Left side “ON” button:
Short Press – to turn on or turn off the output terminal, reduce the voltage or
current value of one unit in the calibration mode.
Long Press – Long press for more than 3 seconds, release to close the digital tube,
press any button to resume the digital tube display.

Right side "SW" button:
Short Press - switch display voltage and current.
Long Press - enter or exit calibration mode. Enter the voltage display interface to
calibrate the voltage, enter the current display interface to calibrate the current.

2. Potentiometer knob
Clockwise rotation increases the output voltage and counterclockwise rotation
reduces the output voltage. The conversion voltage range is from 1.2V to 24V.