Internet #207158792

Model #840450

Store SKU #1001848906

White 45-Watt LED Power Supply Dimmable Driver Transformer

  • Features desirable fade-on and fade-to-dark dimming performance
  • Flicker-free dimming with no loss of light at full brightness
  • Compatible with all dimmers and lighting control systems
  • See More Details

Frequently Bought Together


Product Overview

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 or 100% dimming free of any pop-on or drop-off. The power supply is rated up to 45-Watt at 12-Volt. 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) 45-Watt, 12-Volt Power Supply, 1) Detachable AC Power Cord.
  • Smooth, full range, flicker-free dimming
  • Works with armacost low-voltage dimmers and RGB color controllers
  • Connect up to 100% of the rated 45-Watt maximum load - derating performance is not required
  • Class 2 power supply features overload protection, automatic shut-off
  • 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.
  • No minimum power load, dimming works equally well whether powering a single 3-Watt LED puck light or 45-Watt of tape lighting, or a combination of both
  • Rated for 30,000-hours
  • Class 2 power supply requires no ground wire connection
  • ETL listed for dry or wet location use
  • Limited 3-year warranty
  • Class II AC input (2-wire connection, requires no ground)
  • Complies with FCC part 15B
  • ETL listed for both dry and damp location use
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Product Depth (in.)
7 in
Product Height (in.)
Product Width (in.)


Accessory Type
Color Family
Hardware Included
Number in Pack
Product Weight (lb.)

Warranty / Certifications

Certifications and Listings
Manufacturer Warranty
Limited three year warranty

Questions & Answers


I just noticed that the installation instructions require that the power supply be direct wired i...

Asked by JT February 16, 2021

Thanks for your interest in Armacost Lighting. If you have an outlet that is wired to an AC Dimming switch, this product will work with it and operate properly.

Is it safe to use this on a 20 amp circuit with 12 gauge romex? The instructions specify 14 gaug...

Asked by Rob October 23, 2020

Yes! If you have a larger gauge wire - that is always better. If the wire can safely be terminated under the manufactures terminal - that is great. The only issue is the maximum wire size allowed under the manufacturers terminal. If the manufacturer only allows a maximum of a 14 gauge wire under the terminal then, you need to safely splice the 12 gauge to a small piece of 14 gauge. Then terminate the 14 gauge “pigtail” under the terminal. The bottom line is... I think you are safe with the 12 gauge on the terminal. If it fits safely and securely, you’re good

I bought this dimmer but will use it with a smart RGBW controller. Can i avoid using the dimmable...

Asked by PP September 22, 2020

Thanks for your interest in Armacost Lighting. This power supply does not have an integrated dimmer. You can hook up an RGBW smart controller on the output/DC side of this power supply as long as the controller runs on 12V DC. If this does not answer your question clearly enough please contact us at or 410.354.6000.

Any issue/s with hooking up to a 15amp motion sensor to act as night lite that slowly fades in/out?

Asked by Sarah December 8, 2018

No I wouldn’t see any issues with that - I have put these on dimmers with no issue many times for customers- great idea!

I have approx 54 feet that I want to run continuous light tape using two 32 foot rolls. If run th...

Asked by Justin August 17, 2018

Hi Justin, there are a lot of variations that go into this. Here is the quick info: Armacost makes 3 different LED strips, Pro 30, Pro 60 and Pro 120. The difference is how many LED lights in a foot: Pro 30 is 9 LED light in a foot, Pro 60 18 and Pro 120 36. Each strips pulls different Watts: Pro 30 pulls 10 Watts for every 8ft. The Pro 60 pulls 19 for every 8ft and the Pro 120 not sure but I know it needs its own power Supply... So in your case for the Pro 30, 54\8=6.75*10W would give you pulling 67.5 watts so no the 45 would not work you would need a 120 or break up the run into 2 parts with 2 45W power supples. You can find all this info on

Is this UL listed?

Asked by sparky January 22, 2018

This conforms to ul standard

How many feet of LED strip light will this power?

Asked by Guy April 17, 2017


Hi, I bought four lamps Hampton Bay model #ISV180L-3 and I bring them to Ecuador. Here we uses 120 V DC. How can I do ?

Asked by Ctobi05 June 21, 2016

This power supply converts 120 V AC power to 12 volt DC power. If your lights accept 12V DC input, this power supply should work for your purposes. One note is that this power supply is rated for damp locations, and should be shielded from direct water exposure if installed outdoors.

Customer Reviews

  • 4.5
    out of 67 reviews
  • 92% recommend this product
Filter by:
Showing 1-10 of 67 reviews
Great Value!!
Works as described and found this product operated excellent with leading edge dimmers and trailing edge. By far the best value for the $$. I used this also with the lutron zwave dimmers with same positive results. Also found the tape on the led strip to be very tacky which stuck well underneath my cabinets.
by orangeCT
This power supply was easy to install with the 36 feet of led flexible light strips, the slim des...
This power supply was easy to install with the 36 feet of led flexible light strips, the slim design of the power supply hides easily under or over the cabinets. Provides great light on the counter as well as above accent lighting. Units were easy to install and worked with the recommended dimmers. Have been using these for a month now and we love them.
by Dave
Rating provided by a verified purchaser...
Rating provided by a verified purchaser
by HomeDepotCustomer
Works well, exactly as advertised. This was installed with 3...
Works well, exactly as advertised. This was installed with 3 puck lights and attached to a Lutron Caseta lamp dimmer and works perfectly. No issues.
Finally a low voltage product I can rely on!...
Finally a low voltage product I can rely on!
This product was easy to install. Very satisfied...
This product was easy to install. Very satisfied
Easy to install, great directions, professional appearing finish, yet DIY!...
Easy to install, great directions, professional appearing finish, yet DIY!
by Patrick
Wonderful product. Very reliable. You can install a lot of the compatible...
Wonderful product. Very reliable. You can install a lot of the compatible lights with this transformer/driver. Highly recommend
by Matt
Showing 1-10 of 67 reviews