KOOBOOK 2Pcs LM2596S DC-DC Buck Step-Down Power Converter Module 4-40V to 1.25-37V Adjustable Buck Regulator Module LED Voltmeter Display

How to adjust the accuracy? Output voltage (Input voltage)calibration steps Step 1, Adjust the right button so that "OUT" ("IN")LED lighted, the voltmeter shows the value of output voltage; Press the right button for more than 2 seconds, release, voltmeter and "OUT" ( "IN")LED flashes in synchronization so that you enter the output voltage calibration mode. Step 2, Press the right button (normal speed), the voltage value is adding up a unit; Press the left button, minus a unit; Due to a unit is less than 0.1V, the minimum voltage display to 0.1V, so you need to continuously press 1-5 times to see the voltmeter change 0.1V, how many times voltmeter change 0.1V by pressing the key, depending on the current display voltage, the higher the voltage, the fewer the number of press. Step 3, press the right button for more than 2 seconds, release, to exit the output voltage calibration mode. All parameters set to automatically power down to save. Note: This adjustment method allows you to obtain accurate voltage values over the entire voltage range with only one calibration. Application: The input voltage is higher than the output voltage of the buck field, such as battery, power transformer, DIY adjustable power supply, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc. . We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 2Pcs