1).Short press: input/output display options 2).Moderate press: Enter the fine-tuning state .Increase or decrease the offset (the default is 0), when the voltage display inaccurate use .Short according to the regulation, long press or long according to restore 3).Long press: the state of low power consumption, the digital tube and the lights are out, the normal work of the module. Click the button again to restore. Normal display
Clockwise to adjust output voltage: Clockwise----- increasing voltage Counterclockwise----reduce the voltage
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