---
product_id: 38810471
title: "45-Watt Universal Dimmable 12V DC LED Driver TRIAC 840450"
brand: "armacost lighting"
price: "฿5633"
currency: THB
in_stock: true
reviews_count: 13
category: "Armacost Lighting"
url: https://www.desertcart.co.th/products/38810471-45-watt-universal-dimmable-12v-dc-led-driver-triac-840450
store_origin: TH
region: Thailand
---

# 0-100% flicker-free dimming 45W max load capacity Compatible with AC & DC dimmers 45-Watt Universal Dimmable 12V DC LED Driver TRIAC 840450

**Brand:** armacost lighting
**Price:** ฿5633
**Availability:** ✅ In Stock

## Summary

> 💡 Dim your world, not your vibe — flawless LED control at your fingertips!

## Quick Answers

- **What is this?** 45-Watt Universal Dimmable 12V DC LED Driver TRIAC 840450 by armacost lighting
- **How much does it cost?** ฿5633 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/38810471-45-watt-universal-dimmable-12v-dc-led-driver-triac-840450)

## Best For

- armacost lighting enthusiasts

## Why This Product

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

## Key Features

- • **Powerful & Flexible:** Supports up to 45 watts with no derating and no minimum load, so it powers everything from a single LED puck to full tape lighting.
- • **Effortless Installation:** Includes a detachable AC power cord and compact design for easy plug-in or hardwire setups—ideal for under-cabinet or attic lighting projects.
- • **Universal Compatibility:** Works flawlessly with both 120V AC and low-voltage DC dimmers, making it perfect for any LED setup.
- • **Seamless Dimming Experience:** Enjoy smooth, flicker-free dimming from 0 to 100% with no annoying pop-on or drop-off effects.
- • **Professional Grade Reliability:** Built with high-performance electronics and ETL certification for stable, long-lasting performance in dry or damp locations.

## Overview

The Armacost Lighting 45W 12V Universal Dimming LED Driver delivers professional-grade, flicker-free dimming for low-voltage LED lighting. Compatible with both AC and DC dimmers, it supports up to 45 watts with no minimum load, ensuring smooth brightness control for LED strips, puck lights, and modules. ETL certified and designed for easy installation with a detachable power cord, this driver is the go-to choice for reliable, versatile LED lighting control in both dry and damp environments.

## Description

The Armacost Lighting 45 Watt; 12 Volt Universal Dimming LED Power Supply delivers stable and energy-efficient, low-voltage power to any LED lighting installation. The LED lighting driver is designed using high-performance, professional grade electronics that provide stable 0 to 100% dimming free of any “pop-on” or “drop-off”. The power supply is rated up to 45-watts at 12-volts. For the best results use Armacost Lighting LED lights, switches and dimming light controls. Plug-in or hardwire with detachable AC power cord. Suitable for both dry and damp locations. Includes: 1) 45W, 12V Power Supply, 1) Detachable AC Power Cord

Review: Worked as expected, installed easily and no issues after using device for a while now.. - Purchased for a Under cabinet lighting project and installed the power supply in the attic with a dimmer switch. Unit installed easily and works well. The two legs of lighting worked well for my particular install. Unit seems to be built well and is of a solid design. Between this power supply and the selected dimmer it works well.
Review: It actually works with a dimmer!! - Wow an LED driver / power supply that actually dims the LEDs!!! I thought there was something wrong with my LEDs or dimmer as I tried two different PLUSPOE dimmers that did not actually dim anything and also buzzed. This driver actually works, and works well. I am using the 12v/24watt one to drive 8x half moon 12v LED stair lights. I am also using a Leviton 6674 dimmer in the wall. There is no switching noise from this driver, the construction is solid and the dimming is smooth without flicker. Completely worth the higher price than non certified drivers. The only thing that was odd is that it did not come with a power cord. The lack of a power cord was not a big deal as I had one laying around, but I could see it bothering other people. I have a light switch controlling half of a receptacle in low voltage box, so I did need one.

## Features

- Provides smooth, full range flicker-free dimming for 12-volt LED Lighting such as LED strip lights, modules, light bars, puck and other LED lights
- Compatible with BOTH 120 Volt AC dimmers and lighting controls and low-voltage DC dimmers and controls
- Connect up to 100% of the rated 45-watt maximum load – derating performance is not required
- No minimum power load; dimming works equally well whether powering a single 3-watt LED puck light or 45 watts of tape lighting, or a combination of both
- For optimal AC dimming performance, use a forward phase CL-style or equivalent dimmer. The use of reverse phase or ELV may degrade dimming performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01IY81HO2 |
| Best Sellers Rank | #13,898 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Lighting Low Voltage Transformers |
| Bulb Type | LED |
| Customer Reviews | 4.7 4.7 out of 5 stars (998) |
| Date First Available | August 15, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1 pounds |
| Item model number | 840450 |
| Manufacturer | Armacost Lighting |
| Manufacturer Part Number | 840450 |
| Model | 840450 |
| Product Dimensions | 2.38 x 7 x 1 inches |
| Special Features | Detachable Cord |
| Specification Met | ETL, ETL 5000923 |
| UPC | 856944003962 850080006399 |
| Voltage | 12 Volts |
| Wattage | 45 watts |

## Product Details

- **Brand:** Armacost Lighting
- **Current Rating:** 3.75 Amps
- **Mounting Type:** Ceiling Mount
- **Power Source:** Corded Electric
- **Product Dimensions:** 2.38"D x 7.06"W x 1"H

## Images

![45-Watt Universal Dimmable 12V DC LED Driver TRIAC 840450 - Image 1](https://m.media-amazon.com/images/I/515WkeyCkmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked as expected, installed easily and no issues after using device for a while now..
*by C***N on April 13, 2025*

Purchased for a Under cabinet lighting project and installed the power supply in the attic with a dimmer switch. Unit installed easily and works well. The two legs of lighting worked well for my particular install. Unit seems to be built well and is of a solid design. Between this power supply and the selected dimmer it works well.

### ⭐⭐⭐⭐⭐ It actually works with a dimmer!!
*by N***K on October 10, 2019*

Wow an LED driver / power supply that actually dims the LEDs!!! I thought there was something wrong with my LEDs or dimmer as I tried two different PLUSPOE dimmers that did not actually dim anything and also buzzed. This driver actually works, and works well. I am using the 12v/24watt one to drive 8x half moon 12v LED stair lights. I am also using a Leviton 6674 dimmer in the wall. There is no switching noise from this driver, the construction is solid and the dimming is smooth without flicker. Completely worth the higher price than non certified drivers. The only thing that was odd is that it did not come with a power cord. The lack of a power cord was not a big deal as I had one laying around, but I could see it bothering other people. I have a light switch controlling half of a receptacle in low voltage box, so I did need one.

### ⭐⭐⭐⭐⭐ Excellent product to install, works as described.
*by J***. on December 31, 2023*

I used this with the accompanying ribbon and connectors, and let me tell you, it's simple and it functions beautifully. The light temperature is a perfect warm glow, the install is easy (although my application wasn't, due to poor planning on my part) and even with long lengths of wire inbetween strips, it doesn't dim in the least at the last strip. Solid product, would highly recommend.

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-02-02*