ZK-BMG DC Motor Speed Controller, DC Motor Controller 9V-60V/12A/500W DC Encoder, PWM Control Adjustable Speed Variable Rotary Switch PWM Signal Generator Module

Works well. Adjustable frequency, allows true 0% output via rotating the knob. Display is handy. Stays cool at 7 amps, haven’t loaded it any higher.

Great Little Controller. And, Great Price!

The speed control device worked well until capacitor blue or something like that I don't know exactly what but I think maybe it's because of it was wet outside and just rain so just letting everybody know that yes the water will ruin it

The media could not be loaded. I needed to quiet down my engine room 12V fans and this did the trick. They run while at dock and anchor to dissapate heat after operation and are just to darn loud.

Have already been using it. Won't give 5 stars until it shows longevity and not a burn out . The cabinet it's mounted in includes a cooling fan so I don't think it'll ever over heat especially when only .9 amps as its only loading at the moment and that won't change unless the motor goes bad maybe?A lot less room needed than for other motor speed controllers which was a plus. Maybe not as much power handling as larger units but not needed for my application.Display is bright and clear and the units control pot is very responsive. The connection terminals are better than others and look good. CAUTION! The wiring sticker on this controller was not matching the actual board designated polarities. Someone was reading upside down. Just peel and turn around.So far a good value if it doesn't crap out for no reason. Don't know any reason it would.One thing that I wish the companies producing these small panel mounts would produce and offer, an angled bezel for tilting them upwards or downward for easily reading when high or low. For my application I don't mind squatting or bending down to read but is not always practical and at my age sometimes painful. As my application of them has me tilting them upwards on the panel face. Top edge of the included bezel is touching the face of panel face and the bottom edge is approximately .250 inches from the face of the panel. This request has no bearing on the unit itself or it's rating from me. Personaly I don't own a three d printer or these would be pretty easy to print.Bottom line is so far so good and nice.

I used this to have repeatable speeds via digital readout when controlling a wind shield wiper motor. It works to control speed from low to high. Would buy again.

Gives precise reading . Highly recomend.

I have a 12 v turbo fan on my semi truck but the speed controller stop working and i found this one that works amazing for me