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

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

Good. It does what promises to do.

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.

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.

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.

I ordered three of these to run some 12v led strips from 12v battery boxes containing AAs. pros: Great price Compact units about the size of a deck of cards. Nicely constructed, all metal body, should help with heat dispersion. Dial and terminal cover are plastic but I do not see this as an issue. Easy to connect, just a positive and negative in from power source and positive negative out to source being powered. Took only a few minutes to connect. Smooth dial action with full off position and full on. Dimmed my 12v leds smoothly Easy exchange for new unit. cons: Out of 3 units one did not turn off fully and had to be sent back so I don't know if it was a fluke or if there is poor quality control. No click position for full off, which is not a big deal just seems a bit odd.

I don't need the really high end of the current range, but I tested that in the 3A range for 12V and 24V, it works reasonably well. Construction feels solid and terminals are good. Dial movement is smooth and does not resist being turned quickly. Some notes: - PWM frequency is approx. 680 Hz and does not change for different voltages or duty cycles. - Seems to be more efficient at 12V than 24V. - e.g. when comparing the power draw when dimming 12V and 24V, the 12V seems to be consistently lower draw as a percentage of the normal max draw when not using the dimmer. Further, when the dimmer is at full power, the 12V configuration is slightly under max power while the 24V uses 5-10% more power than when not using the dimmer at all. - The dimming knob reaches min and max power before the end of its rotation limits. This means that once 0% power is reach you can still turn left a few centimeters with no further reduction and the same is true on the max end of the dial. This extra play at the far left and right of the dial makes you think the dimming is not linear at the extremes, but actually, when you are turning past 100% or below 0%, nothing is changing. This also leads some reviewers to think that it dim lower than 30% when in fact it correctly dims down to 1%, then the additional travel once reaching 0% is misleading. - There is no on/off switch "click" at the bottom of the dial and at 0%, there is sometimes a fractional load depending on the device. Use a separate discrete switch. - Quiet - Doesn't seem to heat up for 3A or less. (didn't test higher)