PWM DC Motor Speed Controller, DC 10-55V / Rated 40A, LED Display Stepless DC Motor Speed Controller with Adjustable Potentiometer and Forward-Brake-Reverse Switch

I was really impressed with this item! It came with connectors and a couple little extras. After about 10 mins of setup, not only did it look slick, but, it functions EXACTLY as described! Just what I needed for my highbanker pump! For anyone here doing the a similar project: - (x1) Harmnee Controller - (x1) Prospector's Dream Bac-Pac series highbanker. - (x1) 2,000 gph bilge pump - (x1) 12v 20ah Dakota Lithium battery - Misc. roll of 16ga wire. I've run it in the bath tub for over an hour, at all different speeds. Haven't had a single hiccup! Taking it to the woods in two days for real world testing but, I imagine everything will be great!

We have purchased three different DC controllers for this project. The first two were from China and rated at 30 amps. They both got very hot and failed at 10 amps. We subseuently purchased this controller, which was more sophisticated and had nice remote controls and a speed or percent power indicator. This one is rated at 40 amps, whereas our application required 12 amps, so we intended to run it at about 30% or rated output. At 12 amps, this one also got hot but didnot burn out. We reduced the running amperage to 10 amps and the device did not reach a failure temperature level. We will build this unit into our product but reduce the rating to maximum of 15 amps rather than the published 40 amps. The controls and indicator are very well done.

Simple forward and reverse motor control. I found the rocker switch was not suitable for my needs so changed to two separate momentary push button switches. I didn’t use the ‘turns digital readout’ as it’s not got a ‘retained’ memory, it goes to zero if switched on or off. So I didn’t know where I was in rotation terms.

Works great. You have to wire it with good components to have it last a few seasons on a boat.

Have purchased two of these and both broke within weeks of only a couple of uses. The first one stopped providing power to the motor and the second one lost speed control with it running full out.

FWD REV switch failed second use . i can still get motor to go FWD but not reverse . Not sure if it's a controller problem or the switch that went bad . for now i'll live with the FWD only but will end up replacing this with a better motor controller .don't want to buy just a switch if the problem is the controller. Edited to note that seller is stepping up and sending a new controller . I't good to know they will reach out after the return date and give a solution

Great price for a super quality DC motor speed control. High power capacity.

Item works perfectly. Precise speed adjustment. Love the connectors supplied

These are so much cheaper than expected and works just like the expensive ones.