---
product_id: 573314822
title: "Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof"
brand: "magnolian"
price: "RM398"
currency: MYR
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.my/products/573314822-magnolian-4-pack-high-efficiency-dc-dc-converter-12v-step
store_origin: MY
region: Malaysia
---

# Efficiency >96% Waterproof Housing Overload Protection Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof

**Brand:** magnolian
**Price:** RM398
**Availability:** ✅ In Stock

## Summary

> 🔌 Power Up Your Life with Confidence!

## Quick Answers

- **What is this?** Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof by magnolian
- **How much does it cost?** RM398 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/573314822-magnolian-4-pack-high-efficiency-dc-dc-converter-12v-step)

## Best For

- magnolian enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Waterproof housing keeps your power supply safe in any environment.
- • **Smart Protection:** Equipped with overload, over-current, and low voltage protection for peace of mind.
- • **Compact & Portable:** Lightweight design (only 18.1g) for easy transport and installation.
- • **Unmatched Efficiency:** Experience over 96% efficiency, ensuring minimal energy loss.
- • **Versatile Applications:** Perfect for a variety of car devices like LED displays, GPS, and more.

## Overview

The Magnolian 4 Pack High Efficiency DC/DC Converter is a reliable and compact power supply module that steps down 12V to 9V with an impressive efficiency of over 96%. Its waterproof housing and built-in protection features make it ideal for various car devices, ensuring stable performance in any condition.

## Description

Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof

## Features

- All epoxy sealed containers with Waterproof Housing; Non-isolated
- High efficiency: >96%; Reliable, low heat dissipation
- With overload / over-current / over / low voltage protection, stable performance
- Light compact, convenient to use and transport; Auto recovery
- Widely used in Car device, such as LED Display, Hard Disk Player, MP3, DVD, GPS, etc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Magnolian |
| Manufacturer | Magnolian |
| Model | OT446X4-CO |
| Package Dimensions | 16.5 x 11.9 x 3 cm; 18.14 g |
| Item model number | OT446X4-CO |
| Batteries Required | No |
| Manufacturer | Magnolian |
| Item Weight | 18.1 g |

## Images

![Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof - Image 1](https://m.media-amazon.com/images/I/513jaoWaEaL.jpg)
![Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof - Image 2](https://m.media-amazon.com/images/I/41-SKw6qG-L.jpg)
![Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof - Image 3](https://m.media-amazon.com/images/I/41W7QTFYpFL.jpg)
![Magnolian 4 Pack High Efficiency DC/DC Converter 12V Step Down to 9V 2A 18W Power Supply Module,Waterproof - Image 4](https://m.media-amazon.com/images/I/41au7ePUChL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Works great do far! Used for CO detector.
  

*by S***P on Reviewed in the United States on 9 April 2023*

I used this in my home built camper to hardwire a CO/explosive gas detector. Instead of using the plug/transformer it came with, I just stripped the wires on the CO and wired them to this product, which in turn runs to my 12v distribution block.

### ⭐⭐⭐⭐⭐ 







  
  
    Works!
  

*by I***N on Reviewed in the United States on 22 October 2023*

Have been using it to install a wireless charger in my car. Haven’t had an issues so far

### ⭐⭐⭐⭐⭐ 







  
  
    Very Good Quality and Very Reliable - So Far
  

*by G***S on Reviewed in the United States on 1 May 2023*

I use this device as a voltage regulator for an inline fuel pump on a V6 Carbureted internal combustion engine. This device has run forH O U R S.This device has changed how I look at electronic modifications and add-ons.

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**Shop now:** [https://www.desertcart.com.my/products/573314822-magnolian-4-pack-high-efficiency-dc-dc-converter-12v-step](https://www.desertcart.com.my/products/573314822-magnolian-4-pack-high-efficiency-dc-dc-converter-12v-step)

---

*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-20*