Armacost Lighting 840450 for LED Lighting, with Removable AC Cord, 45 Watt, White

Very easy to install. I hard wired the power pack and also installed a dimmer switch. Works perfectly with no humming. Great product.

Put in a dimmer switch and get the 120 leds per meter. You can crank it up to give all the light you will ever need and yet dim it down to simply add ambience to your kitchen. I installed them in the channel with the diffusers and absolutely love them.

My installation is 820200 dimmable LED driver, three 213413 LED Puck lights, and a Lutron RRD-PRO RadioRA2 dimmer set to Forward Phase and limits at 1%-100%. The problem I'm seeing is there's very little difference in brightness between 100% and 5% on the dimmer. I estimate the light level looks like 100% to 85% then off. If instead I leave the Lutron Dimmer at 100% and hook up an Armacost 511120 dimmer to the DC terminals of the 820200 driver, then using the knob on the 511120 dimmer dims the pucks beautifully and linearly from 0-100%.I measured the DC voltage on the LED driver (without the 511120 dimmer) and as the Lutron went from 1% to 100% the DC voltage on the DC terminals went from 1.5v to 12.3v while driving the 3 puck load. That looked fine as it compared very closely with the same measurement taken on the DC terminals of the 511120 dimmer as I turned the knob from left to right. So if the voltage being seen by the pucks is the same by both driving devices then that implies that the 820200 LED driver is not properly limiting the current to the Pucks during dimming. I tried reaching out to the company but after one week have not heard from them.I'm thinking of just using the Lutron dimmer as a switch and leaving the 511120 as the dimmer manually. I'll be able to set the scene on these art display pucks to the level I want anyway. Not ideal but it works. I'm just wondering if perhaps my LED driver is defective or do they all work like this. It seems others are getting good dimming performance out of theirs?UPDATE 3/20/21: I replaced the 820200 dimmable LED driver with a HitLights 25 Watt Dimmable Driver, Electric LED Driver and the dimming works perfectly. The Lutron dimmer works perfectly in conjunction with this new HitLights 25 Watt driver and the Armacost puck lights. My guess is that the 820200 from Armacost is an "older" version of their driver/dimmer and it just doesn't work that well. Other newer versions of Armacost are getting good dimming reviews. I just played it safe and went with a different brand. I should also note that I never heard back from the company customer service.

One of the few LED drivers that can be dimmed in compliance with the NEC for electrical inspection. The cord that came with it can be unscrewed and the driver can be hardwired with 14-2 romex. The connections are circuit board terminal blocks on each end, so they required a jeweler screwdriver. Be sure to hold the blocks when tightening the screws, so the block doesn't torque off the circuit board.The unit does soft start and ramp to full in 1 sec. Other than that, there isn't a 3 sec delay to warm up like cheap switching power supplies have before they instantly pop on at full brightness. That's nice.I had no problem using a z-wave smart dimmer. I used the a Linear aka Nortek aka GoControl model WD500Z5 zwave dimmer and it successfully burned in so far for 1 day. It does get very warm, even pushing only 10 watts. Like a hot McDs coffee cup hot. Not too hot to start papers on fire, but too warm to be comfortable holding. Plan for that when mounting.Also, If you wired several LED homeruns instead of daisy chaining the runs, be sure to plan on wirenuts or a terminal block to connect to the driver- it only has internal room for 1 #12 pair of wires. You have no internal room for other connections.I powered 10 watts of LED under cabinet LED tape. The cables in the pic are 14-2 romex and 16-2 cl2 riser cable. No issues with those gauges.

The Armacost Lighting 840600 is a high quality, dimmable power supply for 12V LED fixtures or systems.COMPATIBILITY: This power supply should be compatible with a wide range of 120V dimmers. The installation instructions state the following:"Armacost Dimming LED Drivers are compatible with both forward phase (leading edge, triac, incandescent) and reverse phase (electronic low-voltage, ELV, and trailing edge) AC dimmers ... They are also compatible with low-voltage PWM dimmers and RGB color controllers."Although virtually all dimmers will work with Armacost Dimmable LED Drivers, Armacost Lighting recommends dimmers that can be programmed or have an adjustment dial to set the low end dimming range."BUILT IN CONNECTORS: The built in connectors work well and quickly. They need to have some of the outer insulation to clamp onto, to keep the stress of any pull on the wire from going to the terminal connection itself. So don't strip too much of the inner or outer insulation.LOW MINIMUM POWER LOAD: The minimum power load is just 5 watts.VOLTAGE: Output is 12V DC.DIMENSIONS: It's somewhat large, at 7-1/16 inches long by 2-3/8 inches wide by 1-3/8 inches high.ENCLOSURES: If you want an enclosure, Armacost makes variations with enclosures for conduit connections.The only real negative is the cost, though of course having a high-performing, high quality power supply makes it a reasonable value. Lower-watt drivers are less expensive than this one.The manufacturer's website has lots more info, including specs and installation instruction.TWO WARNINGS: First, be sure to get a power supply rated with enough watts to cover your needs.Second, be careful to get a power supply with the right input voltage. Armacost makes a line of 12V dimmers and matching power supplies. This product is the universal power supply, to be used with a range of dimmers and 120V.

I wanted a replacement part. Just read the specs on the old one and got this. Easy to install, even on a ladder

I liked this transformer and also like that it’s dimanle

This dimmable 12V 20W LED driver was to be used with a 120 VAC wall switch dimmer, this means the supplied AC cord must be removed (easy to do) and the driver AC input hardwired using 14/2 NMD90 (Romex) wire, even the provided instruction sheet states this. However, the LED driver's AC input wire hole and clamp are too small for 14/2 NMD90. To make it work properly would require cuting the hole bigger and probably also modifying the cable clamp, which I didn't want to do, so I returned the driver.I can't comment on it's performance as it was not hooked up.The Amazon listing shows a picture of the LED driver hardwired, but it's case must be different from what was shipped to me. I have attached a picture showing the input cable hole, it's obvious the NMD90 wire won't fit.