---
product_id: 236204028
title: "MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter"
brand: "magt"
price: "4721 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/236204028-magt-buck-converter-buck-step-down-regulator-module-lm2596-dc
store_origin: IS
region: Iceland
---

# 4.0~40V input range Built-in LED voltmeter 1.25-37V adjustable output MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter

**Brand:** magt
**Price:** 4721 kr
**Availability:** ✅ In Stock

## Summary

> ⚙️ Power your projects with precision and style—because your gear deserves the best!

## Quick Answers

- **What is this?** MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter by magt
- **How much does it cost?** 4721 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/236204028-magt-buck-converter-buck-step-down-regulator-module-lm2596-dc)

## Best For

- magt enthusiasts

## Why This Product

- Trusted magt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart LED Voltmeter:** Instantly toggle between input/output voltage readings with memory retention.
- • **Tool-Free Installation:** Terminal block design eliminates soldering—plug and play convenience.
- • **Robust Current Capacity:** Delivers up to 3A max output current, ensuring stable performance under load.
- • **Wide Input Compatibility:** Supports 4.0V to 40V input, perfect for diverse power sources.
- • **Precision Voltage Control:** Seamlessly adjust output from 1.25V to 37V for tailored power needs.

## Overview

The MAGT Buck Converter LM2596 is a compact, resin-encased DC/DC step-down regulator module featuring a wide 4.0-40V input range and an adjustable 1.25-37V output. It includes a built-in LED voltmeter with a user-friendly toggle button that remembers your last setting, even after power cycles. Designed for hassle-free installation with a terminal block, it supports up to 3A output current, making it ideal for professional-grade electronics projects requiring reliable and customizable voltage regulation.

## Description

Features: Adjustable output voltage range from 1.25V to 37V continuously adjustable (input voltage must be higher than the voltage to be output by more than 1V). The maximum output current can be as high as 3A, and the common stable operating current is 2A  Specification: Material:Epoxy Resin Voltage Meter :Error+-0.1V;Measuring Range:0~40V Input Voltage:4~40V Adjustable Output Voltage:1.25~37V Maximum Output Current: 3A Stable Current: 2A Internal Oscillation Frequency: 150KHz  Package List: 1*LM2596 Module  Users Manual: Input and output voltage measurement error calibration function, long press the switch for more than 4 seconds, after entering the hand, it will enter the voltage measurement error calibration function.  At this time, the in light is on (calibration input terminal), and the digital tube flashes to display the correction value (factory parameter is 0.0) At this time, press the button to change this value (the value range is -0.5~0.5, the unit is V), the positive number means upward calibration, and the negative number means downward calibration.  After adjusting the comparison value of the input end, press and hold the button for more than 2 seconds, then release the error calibration after the release, then the out light is on (calibration output), and the calibration value of the output is displayed.  The adjustment method is the same as the input. After the comparison value at the output end, press and hold the button for more than 2 seconds. After releasing the hand, save the set value and return to the normal display voltage. The set correction value takes effect immediately and the power is not lost.   Note:  The input voltage is lower than 4V, the onboard voltmeter does not work and does not display.

## Features

- Touch the button to switch the measurement input or output voltage, and the indicator light shows which voltage is being measured, and keep the last setting, even if it is powered off and then on.
- The voltmeter can be turned off by pressing and holding the switch for more than 1 second and less than 4 seconds.
- With terminal block, no soldering iron can be used conveniently, and the wire bonding point is retained. The input voltage is 4.0~40V (the input voltage must be higher than the voltage to be output by more than 1v.).
- Adjustable output voltage range from 1.25V to 37V continuously adjustable (input voltage must be higher than the voltage to be output by more than 1V).
- The maximum output current can be as high as 3A, and the common stable operating current is 2A.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item weight | 0.02 Kilograms |
| UPC | 738660499239 |
| Manufacturer | MAGT |
| Model Number | MAGTmnyqdw251c |
| Colour | Blue |
| Product Dimensions | 5 x 4 x 1 cm; 20 g |
| Material | Resin |
| Item Weight | 20 g |

## Product Details

- **Brand:** MAGT
- **Power source:** Corded Electric
- **Mounting type:** Rack Mount
- **Current rating:** 3 Amps
- **Minimum frequency:** 50 Hz

## Images

![MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter - Image 1](https://m.media-amazon.com/images/I/61JJStYrjvL.jpg)
![MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter - Image 2](https://m.media-amazon.com/images/I/61h5ecxkD+L.jpg)
![MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter - Image 3](https://m.media-amazon.com/images/I/71OIB8B+1NL.jpg)
![MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter - Image 4](https://m.media-amazon.com/images/I/71ROaTPuakL.jpg)
![MAGT Buck Converter, Buck Step Down Regulator Module LM2596 DC/DC 4.0~40V To 1.25-37V Adjustable Reduced Voltage Regulator With LED Voltmeter - Image 5](https://m.media-amazon.com/images/I/61aDe-BjXYL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works perfectly
*by H***T on 2 December 2024*

Great little device, used on my 3d printer as a step down for a RaspberryPi!Press the button to change from volts in to volts out.

### ⭐⭐⭐⭐⭐ Great product
*by B***1 on 24 September 2024*

Good value

### ⭐ Faulty
*by C***Y on 15 May 2025*

Product faulty , had to return to Amazon , not a happy bunny, applied input voltage pressed on button then the magic blue smoke ?????. Will leave you to decide whether you purchase from this seller!

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-13*