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This dimmer is small and compact and can be installed in the smallest places. Perfect for what I need it for, in my boat. It feels very sturdy and easy to install with the included instructions. Highly recommended.
The PWM dimmer works fine with my RV's LED lights, having to wire it using their "simplified hookup" for when the LED light's negative wire is not accessible. However, the lights flicker at a high speed when the control is turned to maximum. I also use PWM LED dimmers made by JR Products and American Technology. These dimmers work perfectly and cause zero LED flicker at any dimmer setting.
Finally was able to speak with the PCA Engineering Dep't about the flicker at maximum brightness problem. They said this dimmer is designed for a "low side" wiring application and won't flicker when installed in the standard 3-wire configuration. However, the flicker will occur when installing it in the 2-wire configuration.
I only recommend this PWM dimmer to those (such as my latest RV installation) needing a dimmer for very small spaces that can tolerate flicker at maximum brightness, or for those that can wire it using the standard 3-wire configuation. Definitely DON'T buy the PWM dimmer for any 2-wire application where you have available space for the JR Products or American Technology brand of PWM dimmers.
UPDATE: Figured out space allocation to allow installation of the American Technology Components 12 Volt DC Dimmer Switch (high side dimmer) sold on Amazon. Removed this PCA dimmer, installed the ATC dimmer, and now my LED lights don't flicker when the dimmer control is moved to maximum brightness, YEA!! Threw my now used PCA dimmer in the trash as I have no other application for a "low side" dimmer.
Installed the switch yesterday. Instructions are worded very confusing. The first question under the questions area on the product page luckily was asking how to wire the switch. The seller responded with: 1 - Connect the + (positive) wire from the LED to the dimmer WHITE wire and to +12 volts. 2 - Connect the - (negative) wire from the LED to the dimmer RED wire. 3 - Connect the BLACK wire from the dimmer to ground.
I wired exactly as described and the switch worked PERFECTLY. I would highly recommend this switch although it is a little pricey. I would definitely recommend the seller print out and include the 3 step wiring process worded above and remove the confusing instructions they currently include. Other than the poor instructions, the product is great, works flawlessly and if I need another switch I would definitely order again.
LEDs are not dimmable --- they produce light, or they don't. The way you dim them is by flashing them ... very fast. The technique is called "PWM" or Pulse Width Modulation. It work well -- and normally you can't see any strobing. It works well. I _AM_ sensitive to the flash --- I do see it somewhat regularly.
When the RV batteries are full, or I'm on shore-power this works flawlessly. However, when the voltage drops I see the strobing, and it does get to the point where it is not strobing -- its flashing. Plug power in -- problem resolves.
If you want to dim on shore power or you have something other than lead acid batteries, this probably would work a lot better. I still am glad to have them....but just be warned if you boondock or have weak batteries -- it is not an ideal solution.
Product was used in an RV (30’ travel trailer) to dim led lights mounted on the rail of the awning. It was installed inline with the existing power switch for the LED lights, and mounted in the cabinet near the panel.
First, let me say that this switch was so good I purchased it twice. I have used it to dim the outside led lights on my awning rail, and when it worked so well, I purchased a second one to install for the overhead lights inside my camper. We were able to install this switch with the simple installation method, with the red and white wires together. After using a multimeter, I determined that my awning LED lights drew 1.5A and my interior lights drew 2A. I purchased this switch since it was rated to handle twice that amperage. Installing was simple, or as simple as working with wiring ever is. The supplied wire nuts were perfect to marry this switch into my existing wiring. I did add a section of heavy duty lamp cord to allow the switch to be placed where I wanted it in the cabinet near the existing switch of my lights. In other words, the wiring on this switch is abou 4 inches long, so if you want this dimmer to be located more than a couple inches away from an existing switch it will be working in conjunction with, you may need to splice in some extra wire to give you the distance you need to relocate this dimmer. If you are wiring this as your only switch, you will need no other wiring, other than what comes in the package. I wanted to keep the original on/off switch and have it work in conjunction with the dimmer, so I need to move the dimmer a little farther away to where I had a place to mount it.
The switch is very small and the locking ring that holds it in place worked perfectly, and tightened down sufficiently such that the dimmer switch itself doesn’t move when you are rotating the dimmer knob.
I expect that the LED lights on my camper are not dimmable per se, since they were not orginally installed with a dimmer, but the brains of this dimmer worked perfectly to allow a full range of light from very dim to full brightness. It is nice to have the ability to have a hard click “off” position, although I don’t expect I will use that feature since I still have the original on/off switch inline.
Mostly, I want to say that installing this dimmer makes my camper lights usable. The outside LEDs on the awning were WAY too bright for calm evening lounging ina campground, without lighting up the site next to me and being a nuissance. This swithc makes it so we can have enough light to lounge, and still be able to have lots of light if we need it. Regarding the inside LEDs, our camper’s lights were so bright that watching TV inside was difficult with them on. With them off, the TV would hurt our eyes. With this dimmer installed, we can adjust the interior LEDs down so that there is ambient lighting for every situation.
I am so pleased at how this will make our lights so much more usable and perfect for our next trip.
There is ABSOLUTELY NO FLICKERING with this switch. The LEDs dim and hold their brightness wherever it is set, with no flashing, flickering, twinkling, or other annoying nonsense, although I guess twinkling might be a nice effect at times.... :)
I bought this switch because the comments and reviews seemed to indicate that the company was very helpful, but I ended up not needing them after all.
I used this controller with a smd LED strip light. I'd say the strip light draws about 12 to 24 watts. For a 12 volt circuit that is 1 to 2 amps. That is well within the stated 4.5 amp rating of this dimmer. It does exactly what I wanted it to do. It has a slight detent (a slight click like a radio volume knob) that cuts the power completely off. Then you turn it clockwise past the click and the lights slowly come up to full bright. I felt the amount of dimming seemed proportional to the sweep of the dimmer. I put my finger on the small case and it never felt warm to the touch. I consider that a good indicator that the unit is not being asked to power too much.
I will say this, the instructions are a little confusing. There are different drawings for LEDs vs. other lights and it could be confusing for some - it was for me. But I found in the written setup verbage a step-by-step description of exactly what went to what. I used that and everything went perfectly. Three wire nuts were included, but they were too large for the wires I was using. I used smaller wire nuts I already had. A diode was also enclosed if you wanted to use it to control a motor.
Thus far, I am quite pleased with the dimmer. I had bought two less expensive dimmers before. One worked about a week then quit. The other has no position that completely turns off the power. That means the unit is drawing battery power all the time. This one is a bit costly, but it seems to be a quality product. One caveat I'll mention. A sealed unit of this size cannot have but so much ability to dissipate heat. It is only my opinion that those who push this unit to the outer limits may cause it to fail.
FYI: I've learned something over many years of working with LEDs. Some of them just do not lend themselves for use with a dimmer - any dimmer. It isn't the fault of the dimmer. It has to do with the wiring and design of the LED. Blaming the dimmer and rating it poorly in such circumstances is simply unfair IMHO.
I'm writing this on June 29, 2018. I'll post an update if this thing fails.
I installed this dimmer for a 3.75A strip of 30 LEDs, which is below the rated limit. “Full brightness” on the dimmer was actually dimmer than a notch to the left. And then it burned out! I got a second one to try again, but that one ran so hot that the metal dial ended up burning my fingers. Trust me, just get the beefier one from Leisure Lectronics, especially if your current is anywhere close to the rated limit. You’ll be able to use proper gauge wire too rather than the shrimpy dental floss wire of this one.