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Internet #203227246

Model #511120

Store SKU #589376

2-in-1 White LED Dimmer

  • 0-100% full-range precision dimming for white LED tape lighting
  • Simple to use, easy to install, connects to low-voltage lighting
  • Use dimmer alone or with optional RF wireless touchpad
  • See More Details

Frequently Bought Together


Product Overview

The Armacost Lighting 2-in-1 LED Dimmer provides smooth, full-range dimming for white LED lighting. The unique, convertible design lets you install dimmer directly into a standard switch box or surface mount anywhere for easy, precise control of your LED lighting. For use only with 12-Volt DC Low Voltage LED lighting. Do not connect to 120-Volt AC current. Model 511120.
  • For use with Armacost Lighting's Ribbonflex pro white LED tape lighting (store SKU # 592412) or other 12-Volt DC (constant voltage) single color LED lighting; not for use with RGB color-changing LEDs 511120
  • Low-voltage safe, connects between the 12-Volt power source and the 12-Volt LED lighting
  • Smooth, 0 to 100% full range dimming
  • Reduces energy used, extends LED life
  • Surface mount or install into a standard switch box
  • For in-wall installation, includes white Decora-style insert to be used with any decora-style wall switch plate
  • Easy quick-connect terminal block direct wire hook-up
  • Operates on 12-Volt DC, not for use with 120-Volt lighting fixtures
  • Will support a maximum load of 96-Watt of 12-Volt LED lighting
  • CSA listed, conforms to UL Standard 8750; Patent Protected 9,167,660+
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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


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

Warranty / Certifications

Certifications and Listings
CE Certified,CSA Listed
Manufacturer Warranty
1 Year

Questions & Answers


What do I use for an electrical box and switch plate?

Asked by Abbe April 19, 2020

It is comparable with a standard size single gauge box, I use the low voltage box and a Decora cover plate.

Hello, I have the Mini Warm White Integrated LED Recessed Puck Lights installed and connected to ...

Asked by greggo202 March 30, 2020

The led dimmers go on the output side of the transformer. You can't put a dimmer on the input side of the transformer.

What do I need if I have a light switch at the top of stairs and another switch at the bottom of stairs.

Asked by Charlotte January 10, 2020

I'm not sure. I think you could use the dimmer that is physically connected to the light string at one location, then connect a wireless switch at the other location. I only use the wireless switch (which also has a dimmer function), but the power unit connected to the led strips does have its own dial dimmer--it's just up on top of the cabinets where I can't reach it. It might also be possible to use two wireless switches and locate the powered control out of the way. I'd look at the Armacost web site; they have a lot of detailed instructions.

Will two of these switches fit into a two gang switch box?

Asked by JayPee June 12, 2019

Yes they will

will this work on a 40 watt 24 volt outside LED string

Asked by george May 31, 2019

should work as long as dimmer kept dry, not ul listed for wet location. led transformer to power supply needs 40w capacity

Are these dimmers rheostats or do they operate in high speed switching mode?

Asked by FRE0 April 26, 2019

Does this dim from 0-12VDC or some different range?

Asked by Sam April 16, 2019

It dims from 0-12 volts dc.

Does this product act as a 12vdc transformer as well, or does it need a 12vdc power supply?

Asked by paul January 10, 2019

Low voltage dimmer only. Has no transformer or voltage converter function.

Are the dimmer knobs replaceable? The other question is would I be relegated to replacing the en...

Asked by ldsw July 1, 2018

The dimmer knobs are replaceable in that they can be removed and/or exchanged. However, it is not a part we have readily available so in the event of a defect, you would have to file a warranty claim* and receive a new dimmer entirely. You can then swap out the knobs or install the new dimmer. *Limited 2 year warranty for dimmers from the date of purchase. Email us at support@armacostlighting.com for more information

Can two dimmers be wired (in parallel) from a single low voltage transformer? Would like to avoi...

Asked by AZDutchman May 5, 2018

We recommend using a single dimmer or color controller with every power supply in your circuit. Wiring more than one dimmer or controller to a single power supply could result in adverse lighting effects such as interference or flickering.

2-in-1 White LED Dimmer - page 2

Customer Reviews

  • 4.1
    out of 74 reviews
  • 82% recommend this product
Filter by:
Showing 1-10 of 74 reviews
Works great. I installed 4 puck lights using the remote dimmer. You can actually turn the manual ...
Works great. I installed 4 puck lights using the remote dimmer. You can actually turn the manual dimmer off and then the wireless remote totally controls the lights. I put the manual dimmer inside my backbar cabinet with the lights and power supply, and the wireless remote attached to the wall.
Works great and easy to install. Love the ability to dim the under-cabinet lights to almost nothi...
Works great and easy to install. Love the ability to dim the under-cabinet lights to almost nothing. Makes a great kitchen night light. Only been installed for about a month so can't comments on reliability. Got a 2 gang switch box, made for one side low voltage and the other 120V. Wife loves it.
by SeriousDIY
One question I have for Home Depot - Why would you stock the 12' Warm White LED Lighting tape f...
One question I have for Home Depot - Why would you stock the 12' Warm White LED Lighting tape for hard-wire and the necessary separate transformer but not stock the Switch / Dimmer in the store? I had to replace the switch / Dimmer but had to order it on line. That doesn't make any sense to me that you can't purchase all the pieces and parts for a complete install at the store.
by Wy44wo
6 people found this helpful
No problem with the functioning of the product, but it was difficult to work with. This review is...
No problem with the functioning of the product, but it was difficult to work with. This review is written for my use, which was in a "rework" wiring box in drywall. For a clean look, and other reasons, I installed this behind the same switch plate as the switch that controls the overhead room lights. Since the low voltage wires should not be in the same box as power wires, I used a "split" box with a power section and a low voltage section bought from Home Depot. This dimmer was too wide for the low voltage section of the box, so I had to modify the low voltage side of the box. I could not use a dimmable power supply because I needed multiple runs from one power supply and that there is no "locally located" power source. As you can see in the standard product photo, the white color of the included "Decora" cover is not quite the same as the regular "Decora" white. The knob-style dimmer does not match other dimmers in "Decora" style -- I have Lutron Skylark dimmers throughout the house, so this was quite disruptive to the style. The most difficult part of this product is that 1) the wiring is at the bottom of the dimmer, 2) the dimmer is placed at the vertical center of the box, and 3) the dimmer is large. Thus, the wires need to be bent back at the point where they come out of the dimmer. For installation ease, Armacost made the wire attachment point removable, which was very nice. However, I had some long wire runs, so I used a large gauge wire (too large, as it turned out). Thus, the wire was very stiff and tended to pull the wire attachment block off of the dimmer. Also, the quick connect block needs to be attached to the dimmer before putting it in the box, so the cleverness of the design is diminished. Also due to the difficulties of inserting the device into the box, I had to cut the tab off of the switch (as suggested by the instructions). This made the dimmer non-returnable, so I am really glad I like the way it turned out. My rating could have been 5 stars for the fact that the product can work as surface or box mount, that it came with a Decora plate and the disconnect block. However, the size of the dimmer itself, the non-standard wire placement and other factors significantly diminish the design. This could have ended up as two stars. Armacost should consider two different dimmer products -- one designed for use in boxes and a different one for surface mount.
by JimL
Works well and high quality
Works as advertised with led puck lights and power supply from different manufacturer. Seems to be very well made, can usually tell by the feel of the rotary switch. This one has a good feel to it. Also installed the wireless switch and they work well together.
by steve
A most have for undercabinet lighting
I used three dimmer on my kitchen undercabinet installation all linked together wirelessly to the wall control (sold separately). The dimmer is a most have if you would like to leave the lights on at night or while watching tv in an adjacent room. The valance I have on my cabinets concealed really well the dimmer and transformer. I just wished it had came with the mounting bolts. Had to make another trip to HD for that.
by Cesar
4 people found this helpful
Easy install dimmer for 12v lighting
This 12v dimmer makes installation easy and gives you options of where you want your led lighting to be controlled from. It can be installed either in-wall or surface mounted. I use them for surface mounting because you can hide them in or under cabinets. 0-100% dimmability. Made of plastic, knob is metal. Installs on load side of led driver.
by Brian
6 people found this helpful
12v dimmer switch is working great in my cargo trailer...
12v dimmer switch is working great in my cargo trailer conversion!
by KJones
Worked as it was e pelted to do....
Worked as it was e pelted to do.
Works well with the wireless dimmer and without it....
Works well with the wireless dimmer and without it.
Showing 1-10 of 74 reviews