---
product_id: 534150606
title: "12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat"
brand: "fbhdzvv"
price: "RM104"
currency: MYR
in_stock: true
url: https://www.desertcart.com.my/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage
store_origin: MY
region: Malaysia
---

# 12V Input 4.2V Output Waterproof Design 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat

**Brand:** fbhdzvv
**Price:** RM104
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Adventure with Confidence!

## Quick Answers

- **What is this?** 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat by fbhdzvv
- **How much does it cost?** RM104 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage)

## Best For

- fbhdzvv enthusiasts

## Why This Product

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

## Key Features

- • **Smart Protection:** Equipped with intelligent microprocessing for over-voltage, over-current, and short circuit protection.
- • **Efficient Cooling:** High conversion efficiency with low heat generation for long-lasting use.
- • **Rugged Reliability:** Waterproof and durable design ensures performance in harsh environments.
- • **Powerful Performance:** Delivers a robust 3A output for all your devices.
- • **Versatile Compatibility:** Perfect for car audio, LED displays, and more—power up your ride!

## Overview

The 12V to 4.2V Converter is a high-performance DC step-down voltage regulator designed for various applications, including car audio and LED displays. With a robust output of 3A and a waterproof design, it ensures reliable operation in challenging environments while providing smart protection features to safeguard your devices.

## Description

Input voltage: DC 12V Output voltage: DC 4.2V Output current: 3A Output power: 12.6W Case material:Aluminum Voltage protection: Input overvoltage and undervoltage protection Overcurrent protection: YES Output line compensation: YES Short circuit protection: YES Over temperature protection: YES Conversion efficiency: 90%~97% Wiring: Input:  Red wire: input +  Black wire: input - Output:  Yellow wire: output +  Black wire: output - Package include: 1 x DC 12v to 4.2v step down buck converter

## Features

- 12V- 4.2V dc converter power supply input voltage DC 12V; output voltage DC 4.2V; output current 3A; output power 12.6W.
- DC-DC 12v to 4.2v car power converter intelligent microprocessing chip, over voltage, over current, over temperature, short circuit, it can be auto protection, and can work in normal condition when restored.
- 12V to 4.2V dc converter car power voltage aluminum case and silicone sealed design make it suitable for use in various harsh environments, high conversion efficiency, low heat generation, good heat dissipation, more durable.
- 12v to 4.2v DC step down buck converter compatible with car audio, car LED display, car DVD,hard disk player,dashcam,solar panel,LED strip lights,LED display,electric fan,camera,light.
- Attention: Please install according to the the label strictly, positive pole and nagative pole can't be reversed, or the module and device might be damaged, to assure this converter has the sufficient voltage and power pls make sure the voltage and power input is enough.

## Product Details

- **Brand:** FBHDZVV
- **Power Source:** Corded Electric
- **Current Rating:** 3 Amps
- **UPC:** 731905685923
- **Manufacturer:** FBHDZVV

## Images

![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 1](https://m.media-amazon.com/images/I/51y-a56jDUL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 2](https://m.media-amazon.com/images/I/610BEypjftL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 3](https://m.media-amazon.com/images/I/61QHGSuhElL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 4](https://m.media-amazon.com/images/I/71aesCOefdL.jpg)
![12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat - Image 5](https://m.media-amazon.com/images/I/61KydQ-VZNL.jpg)

## Available Options

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

## Frequently Bought Together

- 12v to 4.2v Converter DC Step Down Buck Voltage Regulator DC Transformer Power Supply 3A 12.6W Waterproof Car Converter Compatible with Led Light Car Truck Boat
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**Shop now:** [https://www.desertcart.com.my/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage](https://www.desertcart.com.my/products/534150606-12v-to-4-2v-converter-dc-step-down-buck-voltage)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-03-12*