2 Pieces Adjustable LM2596 Buck Converter with Voltmeter Display Buck Module

Specifications:

Model: LM2596 buck converter

Input voltage: DC 4V - 40V

Output Voltage: DC 1.25V - 37V (adjustable)

Output Current: 3A (max.)

Conversion Efficiency: 92% (max.)

Size(L x W x H): 65x39x11mm

Features:

DC-DC step-down module

Thickened circuit boards

Advanced solid-state capacitor

Short circuit and over-temperature protection

100% tested, sealed in anti-static packaging

How to Calibrate the Digital Tube Voltmeter

(Optional steps for the person who need a highly accurate voltage value)

Short press the left "ON/OFF" button to start up the digital tube voltmeter. Long-press (>1s, <4 seconds) the left button to shut down the digital tube voltmeter.

Long press(>4 seconds) the left button to enter self-calibration of voltage measurement(calibration range: -0.5-0.5V, factory setting is 0.0).

"IN" indicator lights = input voltage measurement calibration starts.

Then, long press(>2 seconds) the right " Mode" button, " OUT" indicator lights = output voltage measurement calibration starts.

Tap the left/right button to reduce/rise by one unit (since the voltage value of one unit is less than 0.1V,

you need to 1-5 times tap the button continuously, so that the voltmeter can change by 0.1V)

After calibration, long press(>2 seconds) the right " Mode" button to preserve the adjusted value(no loss with outage) and back to normal voltage display.

Kindly Note:

Input voltage must be 1.5 V higher than the output voltage, no boost

Do not reverse the input and output interface

Keep output under 2A (or 15W), and use a heat sink when for a long time working

What's in the box
2 x DC-DC Buck Converter Module with LED Display