LM2596 DC to DC Voltage Regulator 4-40V to 1.5-35V 2A Buck Converter with LED Display

Features:
- LM2596 DC-DC step down module
- Thickened circuit boards
- Advanced solid-state capacitor
- Short circuit and over-temperature protection

How to adjust the accuracy?
Step 1: Adjust the right switch so that "OUT" ("IN")LED lighted, the voltmeter shows the value of output voltage; Press the right switch 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 switch (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 switch for more than 2 seconds, release, to exit the output voltage calibration mode. All parameters set to automatically power down to save.

Note:
Factory default stays a high voltage, you need to contrarotate about 7-15 circles before the voltage starts ramping down, 1 circle means +/- 1V

Package Included:
2Pcs DC DC Buck Converter