---
product_id: 432129777
title: "LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs)"
brand: "eplzon"
price: "4.18 OMR"
currency: OMR
in_stock: true
reviews_count: 5
category: "Eplzon"
url: https://www.desertcart.com.om/products/432129777-lm2596-buck-converter-with-voltmeter-display-dc-dc-4-0
store_origin: OM
region: Oman
---

# 92% max efficiency Built-in LED voltmeter display Adjustable 1.25-37V output LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs)

**Brand:** eplzon
**Price:** 4.18 OMR
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects smarter, not harder.

## Quick Answers

- **What is this?** LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) by eplzon
- **How much does it cost?** 4.18 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/432129777-lm2596-buck-converter-with-voltmeter-display-dc-dc-4-0)

## Best For

- eplzon enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build Quality:** Thickened 36μm circuit board and premium solid-state capacitors deliver long-lasting stability and noise filtering.
- • **Precision Voltage Control:** Continuously adjustable output from 1.25V to 37V lets you tailor power delivery with surgical accuracy.
- • **Robust Safety Protections:** Integrated short circuit and over-temperature safeguards ensure reliable, worry-free operation in demanding environments.
- • **User-Friendly LED Voltmeter:** Real-time input/output voltage monitoring with easy calibration puts you in full control, no guesswork needed.
- • **High-Efficiency Power Conversion:** Up to 92% conversion efficiency minimizes energy loss and heat, keeping your projects sleek and sustainable.

## Overview

The EPLZON LM2596 Buck Converter is a high-performance DC-DC step-down module featuring a wide input range (4-40V), adjustable output voltage (1.25-37V), and a max output current of 3A. With up to 92% efficiency, built-in LED voltmeter display, and comprehensive safety protections, it’s engineered for precision voltage regulation in electronics projects and power management applications. Pack of 2 modules included.

## Description

EPLZON LM2596 With LED Voltmeter Display Buck Converter 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): 65*39*11mm 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 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 Package List: ✔2x DC-DC Buck Converter Module with LED Display

Review: using one to lower voltage from 13.2 to1.5 to replace a battery on the ignitor on a stovetop so i don't have to take the whole stovetop up to change the battery. it appears to be working. if it dies i have a spare. I bought one from another vendor that looked almost identical except this one only has one control button. this one is definitely better quality. the screws on the connectors on the first one were very difficult to turn and one of them didn't work at all. it broke trying to fix it. these have connectors that work perfectly. no instructions? hook it up you get input voltage, push button for output voltage. adjust output by turning brass screw counterclockwise to lower output voltage. (default setting 12.5v. takes a whole lot of turns to get it moving at first) hold button down to turn of the display. push again to turn on.
Review: Awesome product. The display was a great help to me.

## Features

- The buck converter consists of a 36u thickened circuit board, a high-Q inductor with an output LED indicator, and a high-quality solid-state capacitor that can effectively filter out high-frequency noise
- Product parameters: the input voltage is DC 4.0~40V, the output voltage is 1.25V-37V (continuously adjustable, the input voltage must be 1V higher than the output voltage), the output current is 2A (normal and stable), the maximum is 3A, and the conversion efficiency is 92% ( maximum), the output ripple is less than 30mV, the switching frequency is 150KHz, and the operating temperature is -45°C to 85°C.
- NOTE: This is a buck module. The input and output connectors cannot be reversed. The input voltage must be higher than the output voltage. A radiator is required for long-term work above 2A/15W. When using it for the first time, it is necessary to turn the potentiometer counterclockwise more than 10 times.
- High efficiency: 150KHz internal oscillation frequency, low power consumption, high efficiency. The conversion efficiency is as high as 92%. The input terminal is protected by a diode, and the reverse connection will not burn the module. With overheat protection and short circuit protection
- Application: The LM2596 step-down converter can be used in fields where the input voltage is higher than the step-down output voltage, such as batteries, power transformers, etc. Buck modules can be used in many electronics projects.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09R49R76K |
| Are batteries included? | No |
| Best Sellers Rank | #105,354 in Home Improvement ( See Top 100 in Home Improvement ) #630 in International Power Adapters |
| Colour | LM2596 with Display |
| Country of Origin | China |
| Customer Reviews | 4.3 4.3 out of 5 stars (123) |
| Date First Available | 11 February 2022 |
| Item Weight | 85 g |
| Item model number | EP-LM-2596 |
| Manufacturer | EPLZON |
| Model number | EP-LM-2596 |
| Package Dimensions | 17.5 x 6.7 x 1.6 cm; 85 g |
| UPC | 762917045566 |

## Product Details

- **Brand:** EPLZON
- **Current Rating:** 3 Amps
- **Item Weight:** 0.09 Kilograms
- **Mounting Type:** PCB Mount
- **Power Source:** DC

## Images

![LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) - Image 1](https://m.media-amazon.com/images/I/31Wusx6adjL.jpg)
![LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) - Image 2](https://m.media-amazon.com/images/I/41VhA74Eh+L.jpg)
![LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) - Image 3](https://m.media-amazon.com/images/I/41rApX6cpLL.jpg)
![LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) - Image 4](https://m.media-amazon.com/images/I/51p+0nbnzvL.jpg)
![LM2596 Buck Converter With Voltmeter Display - DC-DC 4.0-40V to 1.25-37V 2A Voltage Adjustable Module (Pack of 2 Pcs) - Image 5](https://m.media-amazon.com/images/I/51tvrP4tJsL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***E on 17 November 2023*

using one to lower voltage from 13.2 to1.5 to replace a battery on the ignitor on a stovetop so i don't have to take the whole stovetop up to change the battery. it appears to be working. if it dies i have a spare. I bought one from another vendor that looked almost identical except this one only has one control button. this one is definitely better quality. the screws on the connectors on the first one were very difficult to turn and one of them didn't work at all. it broke trying to fix it. these have connectors that work perfectly. no instructions? hook it up you get input voltage, push button for output voltage. adjust output by turning brass screw counterclockwise to lower output voltage. (default setting 12.5v. takes a whole lot of turns to get it moving at first) hold button down to turn of the display. push again to turn on.

### ⭐⭐⭐⭐⭐ Review
*by R***Z on 25 August 2025*

Awesome product. The display was a great help to me.

### ⭐⭐⭐⭐⭐ Review
*by M***R on 10 October 2024*

I've been using these to control speed of an exhaust fan in fully enclosed 3d printers, a Voron 2.4 and a Sovol SV08. These printer exhausts are ducted outside, to eliminate fumes from hot plastic in the work area. I set fan speed to exhaust fumes from ABS and ASA filament printing, and to avoid more air exchange than necessary. This balances the need for exhaust and the need to avoid excessive cooling of the printer enclosure. The regulator assembly performs well, using 24V input and typically 9V output, with relatively "clean" power, together with the useful display of input and output voltage.

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-06*