SUPERNIGHT LED Light Strip Dimmer, DC12V-24V 30A PWM Dimming Controller for Dimmer Knob Adjust Brightness ON/Off Switch with Aluminum Housing

Good quality item with easy to wire terminals. The adjustability is great and handles a heavy load up to 30 amps. I'm using it to light some off road LED pod light but I do not have any spec on the lights (typical China stuff :( ). There is one BIG thing to note depending how you use this dimmer. It varies the negative side of the circuit. The application I utilized made this a challenge trying to use it in a HI/LOW light circuit. I preset the dimmer to be set for a dimmed lights on "low beam" switch mode. In "high beam" switch mode bypasses the dimmer and applies the -12v to the lights. The HI/LOW switch was designed to switch the +12 dc for the LED switch status; I had to get creative to make it work. If you just use as a LED dimmer, no issues, it will work great.

Very pleased with the unit. I used it to dim the led bulbs on a triple set of aftermarket gauges in a custom console built for a 1978 bronco.

This lamp had a flaky, mostly-broken touch switch on it. I couldn't use it with a smart outlet because its default setting was OFF when plugging it in, so turning on the outlet didn't turn on the light. It was also hard to turn on manually. When I finally found the right spot on the chassis to touch, it didn't remember my last brightness setting and came on full blast. Lame. Enter: this dimmer! I yanked the touch switch and controller PCB out completely, connected the 4 wires (+/- IN from the power cable, +/- OUT to the light rings) to the terminals on this dimmer, and stuck it to the lamp with a double sided adhesive pad. Bada-bing bada-boom! Now the light comes on to wherever I last physically set the knob as soon as I turn on the smart outlet. The knob is a great size to be easy to use without fumbling around whenever I do want to adjust it, and now I have continuous dimming from zero to 100%, instead of 3 janky settings. $12 to upgrade/revive an otherwise nice lamp. I'm no electrician, but it was a super easy mod. The terminals are stable and just big enough to be easy to work with, the knob feels solid and turns smooth, light doesn't flicker, and the box is nice and light for easy mounting. Easy-peasy.

Ok I'm not an electronics expert. I built a drag race practice tree off of dc truck blinkers. Long story short they were insanely bright to the point it felt like flash burn after using it for a while. Got this dimmer since it was like 10 bucks. Figured why not. I was a little disappointed when I got it because it controlls through the ground not the hot side. This is what it is, my tree was controlling the power side. So I kinda gave up on it. Then I had an epiphany and figured out how to isolate the common ground the lights use which is the entire frame and was able to get this to work which was exciting. After messing with it it really does act like it's just a rheostat. But I did use my voltmeter and it says its operating at 1.20k hz. So that I think means it is indeed pwm. But across the terminals the volt meter reads just like a rheostat with battery voltage at max setting and it just drops voltage down to about 3 volts before the LEDs just shut off due to low voltage. For me the sweet spot on brightness is right in that very bottom range. My understanding is that with pwm you should still be getting battery voltage across the terminals and that the frequency should be changing not the voltage. But regardless it does get the job done. I may try another brand and see how it acts.

have several of these installed on various lighting setups around the house. they work well for the money, mind that toward the lower end of the spectrum (could be due to the LED strips themselves), they cutoff the lights before the zero mark on the dial, but for $10 or so, you get pretty good control and can match other light strips intensity. I specifically used them to match kick panel lighting to under cabinet lighting in the kitchen, and we use them for LED soffit lighting on the exterior of the house (module is located inside our utility room) where we dim and brighten for events regularly.

Great dimmer. Don't do like I did and hook it up backwards. It goes on line after the transformer and not before. After I fixed it, worked great.

I generally have the mindset that if I know something is a cheap piece of crap from overseas, I shouldn't buy it, but I really needed a simple PWM circuit to test out as a motor controller. I took a chance, hoping that this would work. I finally got it and was wiring it up to my motor and power supply and right as I was about to connect the last wire to the circuit before testing it, I touched the wire to the terminal and the motor went full speed. I jumped in my chair since the dimmer was off. I tried it again, hoping I had hallucinated, and it did the same thing. I disconnected everything and tested the resistance between the V+ IN and V+ OUT terminals. No matter what position the knob was in, the resistance was a cool 4 Ohms. The same thing happened between the V- IN and V- OUT. If you don't know a little basic electronics, that essentially means that the dimmer was doing absolutely nothing. It could have just been two wires and functioned the same. I am disappointed, but not surprised. If I were you, I would steer clear of this product, and the 20 other ones that are identical on Amazon but with varying prices and strange names. Indusky? Supernight? Enthve? Rgbzone? Zookoto? Cllena? Is there some "weird name generator" they use? Who's coming up with this crap?! Anyway, rant over. Don't buy it.

I read many reviews on this product when I was having issues. I wired two led strips together in series (essentially I connected two strips together by soldering wires from the end of one strip to another). This caused both strips to turn on full brightness and the dimmer switch was essentially bypassed. The problem is the switch was recognizing the second strip as a “floating ground”. I cut the ground between the first and second strip and the first strip worked! The second strip was now constant power and the switch only worked on the first strip. I believe that if you want to use two separate led strips this switch won’t work for you. I saw another where it has one positive out and three negative out. Meaning you could essentially hook up three separate strips together one switch. I ended up only having a positive wire attaching the first and second strip and putting a regular switch between them. This allowed me to turn on and off the second switch and use the dimmer switch for the first strip. Regardless if the first strip is on or off the second will have constant power. Hope this helps. Don’t series your strips and use this dimmer when it’s connected straight to a battery; it won’t work. I didn’t try to parallel the strips but it’s worth trying if you’re stuck. Three stars because there is literally no information online or in the description of this product detailing series installs and dimmer switches and why they don’t work. It might work on a completely isolated battery but if you have multiple grounds (like in a vw van) you’re going to have problems.

Good dimmer used it to dim cob led strip , just put it between the driver / transformer and the lights , worked very well , they also have this with a remote control if required.

Easy to wire. Made of metal Works and looks very good I recommend for truckers light boards

Good. It does what promises to do.