---
product_id: 331208210
title: "UMLIFE 4PCS AC/DC to DC Step Down Buck Converter AC 5-30V DC 5-48V 24V 36V 48V to DC 2.5-35V 12V Voltage Regulator Board 2A Adjustable Volt Power Supply Module"
brand: "umlife"
price: "11395 Ft"
currency: HUF
in_stock: true
reviews_count: 8
category: "Umlife"
url: https://www.desertcart.hu/products/331208210-umlife-4pcs-ac-dc-to-dc-step-down-buck-converter
store_origin: HU
region: Hungary
---

# Input Voltage AC 5-30V / DC 5-50V Max Output Current 3A with Heat Dissipation Adjustable Output 3.3V-33V UMLIFE 4PCS AC/DC to DC Step Down Buck Converter AC 5-30V DC 5-48V 24V 36V 48V to DC 2.5-35V 12V Voltage Regulator Board 2A Adjustable Volt Power Supply Module

**Brand:** umlife
**Price:** 11395 Ft
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your projects with precision and confidence — don’t get left in the voltage dust!

## Quick Answers

- **What is this?** UMLIFE 4PCS AC/DC to DC Step Down Buck Converter AC 5-30V DC 5-48V 24V 36V 48V to DC 2.5-35V 12V Voltage Regulator Board 2A Adjustable Volt Power Supply Module by umlife
- **How much does it cost?** 11395 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/331208210-umlife-4pcs-ac-dc-to-dc-step-down-buck-converter)

## Best For

- umlife enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Delivers stable 3A output current in a compact module, perfect for DIY and professional projects.
- • **Reliable 24/7 Operation:** Trusted by makers powering ESP32 boards and relays continuously without voltage ripple.
- • **Wide Input Compatibility:** Seamlessly converts both AC (5-30V) and DC (5-50V) inputs for versatile applications.
- • **Precision Voltage Control:** Fine-tune output voltage with multi-turn potentiometer for exact power needs.
- • **Robust High-Voltage Design:** Equipped with LM2596HV chip and external radiator to handle up to 50V input safely.

## Overview

The UMLIFE 4PCS AC/DC to DC Step Down Buck Converter set features high-voltage LM2596HV modules capable of converting AC 5-30V or DC 5-50V inputs into a finely adjustable DC output ranging from 3.3V to 33V at up to 3A current. Designed for reliable, ripple-free power delivery, these compact voltage regulator boards are ideal for powering microcontrollers, relays, and other electronics with precision and stability.

## Description

desertcart.com: UMLIFE 4PCS AC/DC to DC Step Down Buck Converter AC 5-30V DC 5-48V 24V 36V 48V to DC 2.5-35V 12V Voltage Regulator Board 2A Adjustable Volt Power Supply Module : Electronics

Review: Great product! - Works great! After realizing the pot adjustment was backwards from my expectations. Counterclockwise increases output voltage. I have 24ac coming in and 12dc coming out.
Review: Works well enough to power an ESP32 dev board from 24VAC - After reading the reviews, I carefully inspected mine for any manufacturing defects, and it seemed well enough put together (none of the components were on very straight, but everything is there and the solder joints look solid). I put a small load on it (1k resistor, I think) and clipped my volt meter to it and applied a ~12VDC voltage to the input lines (since I only have DC on my bench). It came up around 4 volts by default, so I cranked the potentiometer a few turns -- it's multiple turns per volt, so very precise -- until it read 5.00 volts, and there it stayed over a wide range of (DC) inputs. Later I connected it to an ESP32 dev board, and the hot end to 24VAC, and powered it up. Despite totally different input and load, it still read 4.99 volts so I gave it the tiniest tweak and now it reads 5.00 every time I check it. I also checked it recently on a little oscilloscope and if there's any ripple it's not visible to the eye against the 5 volt displacement. So, no complaints at all, other than that it's a little bulkier than I probably need for my application. (I'm running the ESP32 w/wifi, and up to 6 relays on it; no problem.) I will update this review if it fails; if I haven't, assume it's still working. It's on 24/7 from the date of this review. (Now what to do with the other 3... Sprinkler controller?)

## Features

- 4PCS LM2596HV AC/DC to DC Buck Step Down Converter Module 3v 3.3V 5V 6V 9V 12V 15V 24V DC 5V-50V Adjustable Step-Down 3A Power Supply
- Adjustable AC/DC to DC buck converter power supply module Voltage Regulator
- Input ac voltage AC5V~AC30V or dc5v-50v. Due to the large fluctuation of ac voltage, the recommended ac voltage range has been reserved.
- The power module adopts plug-in LM2596HV, LM2596 version of high voltage, the highest input voltage is 50V(limited by filter capacitor voltage) with external radiator, can withstand high current work.
- Input voltage range: AC 5V-30V, DC 5V-50V Output output range: DC 3.3V-33V

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094ZTG5S8 |
| Best Sellers Rank | #92,258 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #329 in Power Converters |
| Brand | UMLIFE |
| Color | 4 PCS |
| Customer Reviews | 4.0 out of 5 stars 155 Reviews |
| Input Voltage | 50 Volts |
| Item Weight | 3.84 Ounces |
| Manufacturer | UMLIFE |
| Model Number | 701715466395 |
| Output Voltage | 33 Volts |
| Plug Format | Type A |
| Plug Type | Type A |
| UPC | 701715466395 |

## Product Details

- **Brand:** UMLIFE
- **Color:** 4 PCS
- **Input Voltage:** 50 Volts
- **Item Weight:** 3.84 Ounces
- **Output Voltage:** 33 Volts

## Images

![UMLIFE 4PCS AC/DC to DC Step Down Buck Converter AC 5-30V DC 5-48V 24V 36V 48V to DC 2.5-35V 12V Voltage Regulator Board 2A Adjustable Volt Power Supply Module - Image 1](https://m.media-amazon.com/images/I/71WT5ASrcBS.jpg)

## Questions & Answers

**Q: Need 5vdc out, input varies 7-15vac...will it regulate at 5vdc out or will it be proportional to varying 7-15 input**
A: They are very precise about the output.  I used on with 12 v input and 5v output for an arduino.  When I connected it to 24v - still, exactly 5v!

**Q: Will this modual go from 12v ac in to 3v dc out ?**
A: Yes

**Q: Is there a UL Listing for this?**
A: You don’t need one. If you’re going to embed this into a system then the system gets UL approval.
That’s the point of an embedded system.

**Q: Can this convert 24v ac to 24v dc or will there be a drop across the device?**
A: This conversion broad has worked great for me.   My demands are not great , I can get the DC voltages I need.  I recommend!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product!
*by J***2 on September 14, 2025*

Works great! After realizing the pot adjustment was backwards from my expectations. Counterclockwise increases output voltage. I have 24ac coming in and 12dc coming out.

### ⭐⭐⭐⭐⭐ Works well enough to power an ESP32 dev board from 24VAC
*by S***K on November 15, 2023*

After reading the reviews, I carefully inspected mine for any manufacturing defects, and it seemed well enough put together (none of the components were on very straight, but everything is there and the solder joints look solid). I put a small load on it (1k resistor, I think) and clipped my volt meter to it and applied a ~12VDC voltage to the input lines (since I only have DC on my bench). It came up around 4 volts by default, so I cranked the potentiometer a few turns -- it's multiple turns per volt, so very precise -- until it read 5.00 volts, and there it stayed over a wide range of (DC) inputs. Later I connected it to an ESP32 dev board, and the hot end to 24VAC, and powered it up. Despite totally different input and load, it still read 4.99 volts so I gave it the tiniest tweak and now it reads 5.00 every time I check it. I also checked it recently on a little oscilloscope and if there's any ripple it's not visible to the eye against the 5 volt displacement. So, no complaints at all, other than that it's a little bulkier than I probably need for my application. (I'm running the ESP32 w/wifi, and up to 6 relays on it; no problem.) I will update this review if it fails; if I haven't, assume it's still working. It's on 24/7 from the date of this review. (Now what to do with the other 3... Sprinkler controller?)

### ⭐⭐⭐⭐⭐ Good Quality and Affordable
*by S***R on August 20, 2025*

These are perfect for regulating voltage for small projects where you need DC voltage but have a long wire run.

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-02*