HAMRVL Led Dimmer Switch DC 12V Touch Switch On/Off Dimmer Stepless Dimming Switches as 5-24V Single Color LED Lights Strip Brightness Controller Suitable For 17mm/0.67in Mounting Hole(Touch dimmer A)

I have used numerous of these switches in various projects, both my own and for clients. Was hestitant at first despite from of the reviews. Long short, they work great if you know what you are doing (basic electrical skills and such). I have purchased and installed many of these touch activated switches, from latching (no LED) to latching with LED always on, to stepless dimming (LED on when light on). All have worked from the start and continue to work perfectly. Really great switches. Note that these switches do not interrupt the red (positive) wires as in most mechanical toggle switches, but instead interrupt the black to green connection (negative); in other words, the black and green wire CANNOT share a common ground but must instead remain on separate, isolated circuits (green to battery negative, black to light negative). This is exactly as shown in their installation instructions. However, I tried to take a shortcut with this light as I was swapping out an older, mechanical toggle switch and had wired the light so that its black/negative ground wire was connected to chassis ground, which is also ultimately connected back to my "house" battery ground in my vehicle. The touch switch didn't operate under these conditions (unlike most 12V DC mechanical toggle switches). I have since disconnected the light's ground wire from its connection with chassis ground and connected it directly to the black wire of the touch switch, and viola! All the switches I have utilized work perfectly! I've included the wiring schematic I received.

This little dimmer button is fun. It's biggest problem is making itself know to those who aren't looking for it. It is simply a touch dimmer for 12v, max 36 watt, LED lights. Touch it and it comes on. Hold your touch and it dims up or down, depending on it dimmoing state. If you stop dimming at a point of brightness that you like and turn the light off by touching the button, it will return to that level when you touch the button and turn it back on. It is very small and compact and doesn't cause flicker (when used with the right power supply and lights) and is silent. If you are looking for an unobtrusive small dimmer, this could be your best bet. The photo above shows the switch mounted in a corner oak piece I made to dim under the under-counter lights.

5v worked fine

Should have looked at reviews first. Got this to dim the light for fuel level on an auxiliary fuel gauge. The only thing to work was the blue circle light. It did not dim or turn off Instructions are useless. I agree with another post, Amazon needs to do something about these companies in China dumping JUNK products on us.I am getting more items that do not work or are misrepresented.

Works very well, though it took some time to get used to the sensitivity/operation.

I bought a couple of these and I was very impressed with both. One touch on and off. Dim by holding your finger on it. Definitely worth the money.

Well, it worked fine at the beginning, but after about 3 weeks the blue light on the switch went out. Hopefully it will continue to control the leds.

They are packaged properly.They appear nicely made with instructions you can see and read.All three when powered on 24v dc lite up .But you had no control over the lights it stayed where it was on at. One the blue ring light did not work. I attempted the installation on one 12v strip , one 24 v strip and one 24 volt 6 led spot light.The results were the same.No control. No on or off. No dimming. They look pretty.

What a waste of time the only thing that works with the switch is the blue light. It did not turn the LED lights on or off waste of money and time.