5PCS DC 5V-36V 15A 400W Dual MOSFET Trigger Switch Drive Module | Max 30A, High-Power, 0-20KHz PWM Adjustment, Electronic Switch Control Board, Motor Speed Control, Lamp Brightness Control

Clearly marked circuit pathways and a good fully functional gating system with your ground being common and your positives isolated. Have fun.

These are very reliable and run at a low temperature. I've been using them to control 4-pin fans and blowers (though 3-pin would work fine with these modules) for a wind simulation setup, and these PWM controllers have run continuously at 12V for days without any problems. I haven't bothered with heatsinks or cooling fans; passive airflow in an enclosure has been adequate. Screw terminals make it easy to install your source and drain wiring. The 10-pack is a good bulk price for tinkerers and hobbyists.

Ordered one, new package, one of the four channels was dead. Returned for a replacement. Replacement received, new package, but two of the channels are dead. Returning for a refund.

I combined this with TTP223 touch modules to switch 12V LED lighting strips in my kitchen. Works great! My installation also includes a 12V power supply to power the LEDs and a 5V buck regulator to power the touch modules. Like others have mentioned, this product is only good for resistive loads. It is not designed to run motors.

Works well with 12v PWM and 18v supply. The MOSFETs get warm but not too hot, I likely won't need to add a heatsink. The VIAs/pads are very small for the PWM/GND. This made soldering leads difficult, though doable. I'd recommend stranded if using some form of hookup wire.

Anyone doing hobby or prototype work must have these handy.

I love these because you don't even need a microprocessor. If you like to do things in your car - this is a perfect replacement for a relay. And so easy to use. The item in the image could easily control 12V with a very small voltage (like 3.3v and say a 220ohm resistor). I've used it successfully with an ESP32 PWM configuration. Great stuff. My pic shows one connected to a standard 12v adapter. Don't forget to use a flyback diode if controlling things with coils (or any inductive reactance). The only diode I see on the board is an LED that goes on when the circuit is closed (flowing - input energized)

Works for inductive loads like motors only if you modify it. As shipped, it is unsuitable for inductive loads. I wanted to control a 7A motor with one of these, using an Arduino R4 to control it. That can be done, but this is what I did to make it work: 1. Add a flyback diode. 2. Cut the leads to one of the two MOSFETs. 3. Add a heat sink. 4. Add a reverse voltage protection diode so that in the event of a catastrophic failure the Arduino does not get fried (yes--I had such a failure). Optional: I added a 100uF capacitor across the input. (For convenience I also added a female header on the trigger pins.) Note that this device switches ground and that trigger ground is shared with the controlled ground. This might be a problem for some users. With all of this, it works quite well in my application controlling a 7A motor with 12kHz PWM from an Arduino R4. But, should I really have to do all of this? Why does it not come with a flyback diode? And if there are going to be two MOSFETs, why not put in a control circuit designed for two MOSFETs.