Maxmoral 1-Pack DC-DC Buck Converter with LED Voltmeter Display Adjustable Step-Down Power Module Voltage Regulator 5A 75W

Specification: With power indicator light With self-correcting LED voltmeter display. Adopting more advanced voltage microprocessor, voltmeter error +/-0.05V, measuring range 0~40V. (Attention: Please input voltage above 4.5V to ensure the accuracy of the voltmeter.) Light touch the button to switch measuring the input or output voltage, and the light will indicate which voltage is being measured, and save the setting, even if the power is turned off before starting up. Voltmeter can be closed easily by light touching the left button when you do not need it. With wiring terminals for convenient use without soldering iron, and keep the soldering points. With overheat protection and short circuit protection On-Board Voltmeter Self-Calibration Method: 1. When it displays output voltage, long press the right button for 2s, then release, the voltmeter and output voltage indicator "OUT" flash synchronously, enter into output voltage adjustment mode; In the same way, when it displays input voltage, long press the right button for 2s, then release, the voltmeter and input voltage indicator "IN" flash synchronously, enter into input voltage adjustment mode. 2. Light press right button, voltage goes up a unit, light press left button, voltage drops a unit; Due to the voltage value of 1 unit is less than 0.1V, you need to continuously press 1-5 times, then the voltmeter changes 0.1V, how many times you need to press continuously depends on the current displayed voltage value, the higher the current voltage, the fewer times of pressing. 3. After the voltage adjustment is completed, long press the right button for 2s and release, then exit voltage calibration mode, all parameter settings are saved automatically after power off.