DC 12-60V Motor Speed Controller 20A Adjustable PWM Controller Switch Forward/Reverse Electric Motor Speed Regulator Suitable for DC Brush Motor

Works Great. Tested it with a 12V to 24V DC Motor at 19V 0.4A. The Speed knob is smooth and clicks off with a good feel. The Off/Direction switch works great. Crisp switching feel between Clockwise/Off/Counter-Clockwise. Very good quality and I am happy with this purchase.

This item works really well as a speed regulator for a recirculating sluice. Wire it into the battery and out to the pump and you’re in business.

This controller is mounted in my greenhouse to control the speed of a recirculating ceiling fan. It works perfectly except that the controller knob indicates lower numbers for higher speeds and higher numbers for lower speeds, meaning its indicators are entirely backwards for functionality. It is a bit awkward as a result but the unit is neat, clean, and well-made. Someone simply got their wires crossed, literally! LOL!

I used this to control the speed on a Christmas game I made with a conveyor belt. I tried to use a variable output power supply but this gave me a lot more control.

I wouldn't say that this is defective because that implies that it could function. This is just a bad product as it appears it could never actually function. The +/- motor lines are dead shorted together, but I cannot figure out why. There's no solder shorts on the board. It appears it's shorted in the actual design of the circuit on the PCB. I guess I should have known to check that out first considering the quality of products coming out of china, but I didn't. I carefully wired it in to run a pair of 12V exhaust fans (drawing 12A), doubled checked everything and the instant I turned on the power, it loudly blew a 20A fuse. Grabbed the meter and tested across the motor terminals and they're shorted.Returned it and bought a different design.

This is the best control that I have tried, if you are looking for a control that works this is for you

Lasted about 3days

Fit my needs.Good priceWell madeI used it to control a fan on a homemade air conditioner.Excellent control 👌