---
product_id: 87544130
title: "DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer"
brand: "dollatek"
price: "Rp308066"
currency: IDR
in_stock: true
reviews_count: 13
category: "Dolla Tek"
url: https://www.desertcart.id/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator
store_origin: ID
region: Indonesia
---

# 5A max output current Adjustable 1.25-36V output range Overheat & short-circuit protection DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer

**Brand:** dollatek
**Price:** Rp308066
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer by dollatek
- **How much does it cost?** Rp308066 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/87544130-dollatek-small-dc-buck-voltage-converter-step-down-voltage-regulator)

## Best For

- dollatek enthusiasts

## Why This Product

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

## Key Features

- • **Tool-Free Setup:** Convenient wiring terminals allow quick installation without soldering, perfect for rapid prototyping and on-the-go adjustments.
- • **Smart Safety Features:** Built-in overheat and short-circuit protection safeguards your devices and workspace.
- • **Robust 5A Power Delivery:** Supports up to 5A current with low ripple, ensuring stable and efficient performance for demanding projects.
- • **Integrated Dual Voltmeter:** Instantly monitor input and output voltages with a switchable mini voltmeter and LED indicators—no extra tools needed.
- • **Precision Voltage Control:** Fine-tune output voltage from 1.25V to 36V with a multi-turn potentiometer for exact power needs.

## Overview

The DollaTek Small DC Buck Voltage Converter is a compact, high-efficiency step-down regulator module that converts 4-38V input to a finely adjustable 1.25-36V output at up to 5A. Featuring a built-in voltmeter, LED indicators, and robust safety protections, it’s designed for professionals and makers who demand precise voltage control and reliable performance in a compact form factor.

## Description

Features:Input voltage: DC 4.0 ~ 38V Output voltage: DC 1.25V ~ 36V continuously adjustable ( the input voltage must be higher than the output voltage 1.5V ) Output current: max 5A, recommended for use in the 4.5A. Output power: up to 75W, more than 50W, Please enhance heat dissipation Voltmeter error: +/- 0.05V Measure range: 0 ~ 40V ( please ensure that the input voltage is 4.5V or more) Conversion efficiency: up to 96% Load regulation: S (I) ≤ 0.8% Voltage Regulation: S (u) ≤ 0.8% With overheat protection and short circuit protection Dimensions: 6.6 * 3.9 * 1.8cm Package include:1x DollaTek DC Step-down Module

Review: Arrived on time and seems to work well. Not had it long enough to comment on durability. - Only negative point so far is the lack of any documentation. That said it seems well constructed and, on the bench, it seems to do what it claims. The meter for both input and output match the values on my multimeter (but only show one decimal place rather than 2) but that is fine. I wanted an initial output of 3.7v and, although the meter functions accurately down to 4v below this it shows 3 dashes. However, I could achieve a stable output at 3.7v, checked with my multimeter. The type of adjustable potentiometer used was familiar to me and these often take 15 or more full turns end to end to allow fine adjustment. Put the supplied standoffs on and/or make sure you are resting on a non-conductive surface before applying power. Remember a lot of turns anti clockwise to go down on the output voltage. Set the output voltage before you connect your device.
Review: Does not work -DOA - Product arrived DOA. It lights up but the small screw that is supposed to alter the output voltage does nothing rendering the item completely useless. Am returning to desertcart for refund.

## Features

- With power supply green LED indicator and the mini voltmeter which can be calibrated by adjusting potentiometer
- High power of 5A and low ripple; has heatsink and copper pillar; Over-heating/short-circuit protection allows safe usage
- Press the switch button to choose testing input/output voltage; "IN"LED light when testing input voltage; "OUT" LED light when testing output voltage
- Press the left-side button to turn ON/OFF voltmeter; Wiring terminals makes convenient usage even without soldering iron
- Adjust the potentiometer in clockwise direction for output voltage increase and decreasing output voltage in counter-clockwise direction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07DK6WN63 |
| Best Sellers Rank | 2,587 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 5 in Industrial Power Supply |
| Guaranteed software updates until | unknown |
| Item model number | 742548985240 |
| Item weight | 0.02 Kilograms |
| Manufacturer | DollaTek |
| Product Dimensions | 1.8 x 3.9 x 1.8 cm; 20 g |
| Specification met | ETL, FCC, UL |
| UPC | 742548985240 |

## Product Details

- **Brand:** DollaTek
- **Current rating:** 5 Amps
- **Mounting type:** PCB Mount
- **Power source:** DC Voltage Input
- **Product dimensions:** 18D x 39W x 18H millimetres

## Images

![DollaTek Small DC Buck Voltage Converter Step Down Voltage Regulator Module Board 4-38V to 1.25-36V 5V/12V Adjustable Output Voltage Stabilizer Transformer - Image 1](https://m.media-amazon.com/images/I/71b18vXk3rL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Arrived on time and seems to work well. Not had it long enough to comment on durability.
*by A***R on 18 January 2026*

Only negative point so far is the lack of any documentation. That said it seems well constructed and, on the bench, it seems to do what it claims. The meter for both input and output match the values on my multimeter (but only show one decimal place rather than 2) but that is fine. I wanted an initial output of 3.7v and, although the meter functions accurately down to 4v below this it shows 3 dashes. However, I could achieve a stable output at 3.7v, checked with my multimeter. The type of adjustable potentiometer used was familiar to me and these often take 15 or more full turns end to end to allow fine adjustment. Put the supplied standoffs on and/or make sure you are resting on a non-conductive surface before applying power. Remember a lot of turns anti clockwise to go down on the output voltage. Set the output voltage before you connect your device.

### ⭐ Does not work -DOA
*by A***S on 16 January 2026*

Product arrived DOA. It lights up but the small screw that is supposed to alter the output voltage does nothing rendering the item completely useless. Am returning to Amazon for refund.

### ⭐⭐⭐⭐⭐ Cheap and effective Buck converter
*by N***S on 28 September 2025*

Bought this to provide power to some electronic items in a remote controlled aircraft. It does the job well and is compact enough that it fits perfectly inside the aircraft. I desoldered the connectors so that I could solder the wires to power it and take power from it, since weight in aircraft is key. As a cheap item it works perfectly, so no complaints. The LED display gives a fairly accurate indication of the output voltage too, but I used my digital multimeter to check the output was currect.

## Frequently Bought Together

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*Product available on Desertcart Indonesia*
*Store origin: ID*
*Last updated: 2026-03-07*