mxuteuk 2PCS 12V/24V DC Motor Speed Controller Switch Universal Electronic Stepless Speed Regulator Switch for Car Truck Fan Heater Control M-H-002

I hooked two of these up today Oct 28th 2023 and both of them burnt up. I have used these in the past and worked great these two are burnt were you can't tell what they are. Thank the lord I had gloves on when I ripped them out.

Been in electrical & controls for 40+ years. Not sure what "John Q Customer" was doing, but do not follow his wiring. This will eventually burn up the control, which is why he felt the heatsink getting super hot. I bought this to control speed of a 12vdc bilge fan I bought for a swamp cooler. Follow the wiring diagram. IT IS CORRECT. RED-connect to (fan+) & 12vdc supply POS "should be 3 wires" Black-connect to 12vdc supply NEG "should 2 wires" BLUE-connect to (fan-) Essentially, the control is regulating the NEG not the POS.

I purchased two of these for light duty use. Used in an application that controls a small light duty 12 volt 50 rpm motor. The motor is turned on for a couple of seconds then off. Some time later it does it again. This happens maybe 20 times a day. One unit started blowing fuses and has developed a dead spot when adjusting it. So far the other one is still working. 50% percent, not bad This is very limited use. I can only imagine what happens in a more active environment. Don't but it. Build it.

Great product

To get mine to work properly I had to wire the red and blue together and place them to positive, the black wire went to one side of my fan and the other went to ground. When I wired it according to the diagram on there product page, the power was 100% and constant, the knob was useless, no on/off and no variable voltage, until I wired it my way. The heat sink does get very hot, but that is normal, it's not enough to catch the curtains on fire. Could use a cooling fan on the heat sink. Otherwise it works nice, has a pretty decent smooth voltage transition. I'm supplying a 12 volt 90 watt radiator cooling fan, that I'm using as an actual fan in a chandelier project. My power bank 12 volt output is rated at 8 amps, so I'm guessing your safe up to 8 amps at least. I've heard others are powering up to 120 watts without problems. Also heard some have burn't out completely on low wattage motors too, so it's a risk either way you look at it. I just got lucky. Update: Just noticed at full throttle the regulator doesn't send 100% power. My 90 watt 12 volt fan is only running 1/3 speed as opposed to direct power.

wasn't sure whether to trust this but I have had it on for over an hour and it seems to work fine. Wiring is confusing just follow the directions on Amazon. Have no idea how to mount on a panel or where it is supposed to be mounted can anybody help?

I used the on my car AC blower motor. They work great and do not get hot. Will see how they last

Easy to wire used these for by sxs fans