---
product_id: 81860800
title: "LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display"
brand: "qebidum"
price: "€ 20.53"
currency: EUR
in_stock: true
reviews_count: 12
category: "Qebidum"
url: https://www.desertcart.hr/products/81860800-lm2596s-dc-dc-buck-converter-diy-4-40v-to-1
store_origin: HR
region: Croatia
---

# 4-40V input range ±0.05V LED voltmeter accuracy 1.25-37V adjustable output LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display

**Brand:** qebidum
**Price:** € 20.53
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects smarter, not harder!

## Quick Answers

- **What is this?** LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display by qebidum
- **How much does it cost?** € 20.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/81860800-lm2596s-dc-dc-buck-converter-diy-4-40v-to-1)

## Best For

- qebidum enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Lightweight:** Sleek 6.1 x 3.4 x 1.2 cm design weighing just 22g fits seamlessly into any DIY or professional project.
- • **Robust Power Handling:** Supports up to 2A continuous current and 15W output power with built-in thermal and short-circuit protection.
- • **User-Friendly Interface:** Easy toggle between input and output voltage display with intuitive LED indicators for hassle-free operation.
- • **Precision Voltage Control:** Continuously adjustable output from 1.25V to 37V lets you tailor power with pinpoint accuracy.
- • **Real-Time Voltage Monitoring:** Integrated LED voltmeter with ±0.05V accuracy keeps you informed of input/output voltage at a glance.

## Overview

The LM2596S DC-DC Buck Converter is a compact, high-precision step-down voltage regulator module featuring a wide input range of 4-40V and an adjustable output from 1.25-37V. It includes a built-in LED voltmeter with ±0.05V accuracy for real-time voltage monitoring, supports continuous 2A current with 15W max power, and offers essential protections like thermal shutdown and short-circuit prevention. Ideal for DIY electronics and professional applications requiring reliable, efficient voltage stabilization.

## Description

Features:An input and output voltage switch.Green light: Output voltage measurement.Red light: Input voltage measurement.With terminal and maintain the cable connection point.Specifications:1, Input voltage range: 4~40V DC2, Output voltage range: 1.25-37V DC adjustable3, Output current: 2A4, Voltmeter range: 0 to 40V, error ±0.1V5, Input reverse polarity protection6, Built in output short protection function7, Built in thermal shutdown function8, L x W x H =6.1*3.4*12 cm9, Weight: 22gWiring Connection:IN + : input positive/IN - : input negativeOUT + : output positive/OUT - : output negativeNote:To guarantee the accuracy of the voltmeter , make sure the input voltage above 4V.The input voltage must be 1.5v higher than the output voltage or 1.5v above.Package Include:1* DC DC Buck Converter

Review: SMALL - heat level
Review: I WIN! Made it so my robot can use a bigger battery, - I Connected a 32v lightweight Mighty Jump automotive Jumper battery to my tank frame Arduino Robot. their product allowed me to lower the 32v down to 11.1v so my robot has a function time of 40 min compared to 10 min the other 11.1v battery pack was giving me. just know when the battery starts to give out less volts its output drops volts too. make sure power supply is fully charged before setting the output

## Features

- LM2596 Buck Converter Module with voltage display function, the displayed accuracy is ± 0.05V, range is 0 - 40V.( Note: in order to voltage display more accurate, please ensure that the input voltage is higher than 4V).
- Tips: due to different batches, green or blue board will be delivered randomly. LED digital voltmeter tube, the accuracy is adjustable function, can be aimed at your multimeter adjustable accurate.
- Press the right key to let the display show the input or output voltage. when the right “OUT” led light, it shows output, the left “IN” led show input.
- Continuously adjustable output voltage range of 1.25V -37V, 4-40V input voltage range.(The input voltage is at least high than the output voltage of 1.5V).
- Output current: 2 A continuous output. Output power: the maximum 15 w. ensured 3A output load current, current limit protection, and thermal shutdown.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BTGRPQG |
| Best Sellers Rank | #811,776 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,684 in Power Converters |
| Date First Available | March 30, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.634 ounces |
| Item model number | LM2596S |
| Manufacturer | GLOBAL QEBIDUL Store |
| Product Dimensions | 2.16 x 1.37 x 0.66 inches |

## Product Details

- **Amperage:** 2 Amps
- **Brand:** QEBIDUM
- **Color:** BLUE
- **Compatible Devices:** Laptops, Tablets
- **Connector Type:** Barrel Jack or Terminal Block
- **Included Components:** 1 x Microcontroller, 1 x Capacitor
- **Input Voltage:** 40 Volts
- **Number of Items:** 1
- **Wattage:** 15 watts

## Images

![LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display - Image 1](https://m.media-amazon.com/images/I/6157z0RLfdL.jpg)
![LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display - Image 2](https://m.media-amazon.com/images/I/51GCfKSbcgL.jpg)
![LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display - Image 3](https://m.media-amazon.com/images/I/51mR7vEe1LL.jpg)
![LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display - Image 4](https://m.media-amazon.com/images/I/61m5wFJbXyL.jpg)
![LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display - Image 5](https://m.media-amazon.com/images/I/617QHnDDR0L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ SMALL
*by D***R on February 9, 2026*

heat level

### ⭐⭐⭐⭐⭐ I WIN! Made it so my robot can use a bigger battery,
*by J***N on March 18, 2019*

I Connected a 32v lightweight Mighty Jump automotive Jumper battery to my tank frame Arduino Robot. their product allowed me to lower the 32v down to 11.1v so my robot has a function time of 40 min compared to 10 min the other 11.1v battery pack was giving me. just know when the battery starts to give out less volts its output drops volts too. make sure power supply is fully charged before setting the output

### ⭐⭐⭐⭐ pretty shoddy
*by J***E on December 20, 2023*

poor quality construction. it looks identical to others on amazon, but isn't. took the advice from a reviewer and bought a pair for $2 more. be careful connecting the wires. no reverse polarity protection. burned up this one and one of the other pair i ordered.

## Frequently Bought Together

- QEBIDUL LM2596S DC-DC Buck Converter DIY 4-40V to 1.25-37V Step-Down Regulator Power Module Volt Stabilizer with LED Voltmeter Display LM2596 With LED Blue LM2596
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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-26*