Xl6009 with voltmeter display

Usage method:
1. input and output voltage measurement error is: press switch for 4 seconds or more, go into the voltage measurement error calibration function, the IN lights (calibration input), digital tube display more positive (factory parameters is 0), then press the button can change this value (the value range of -0.5 ~ 0.5, the unit is V), said the positive to negative calibration, calibration said downward. After adjusting the input calibration value, press button 2 seconds or more, go into the calibration of the output, the OUT lights (calibration output), and display the calibration of the output value, the adjustment method and the input of the same, after the whole output value is accurate, long press the button for 2 seconds or more, go save the value set and return to normal display voltage setting correction value immediately and not lost power. (with this feature, you can meet your higher precision requirements)
2. turn off the voltmeter: press the switch for more than 1 seconds, and less than 4 seconds, and then you can turn it off. After the voltmeter is turned off, the voltmeter is opened as soon as the switch is pressed.
Matters needing attention:
1. recommend power use more than 20W, need to add heat sink and so on to strengthen heat dissipation;
2., there is customer response module, output voltage can not be adjusted, always equal to the input voltage. When you encounter this problem, please turn the potentiometer 10 times counterclockwise, and then use the module to adjust the voltage.
Application case:
This module can be used in the field of transport boost output voltage is higher than the input voltage, such as battery, power transformer, DIY adjustable regulated power supply, 24V vehicle notebook power supply, industrial equipment, Buck 9 turn 12V, 12V 18V, 18V 24V etc.