DROK® DC Motor Controller 10-50V 30A 1000W PWM Stepless Motor Speed Control Regulator 240HZ 2.2KHZ 22KHZ Adjustable Frequency Regulation with Switch Function

This motor speed controller works great! It is easy to install and seems durable. I have had one installed in my boat for a few months. It runs a 4" in line bilge fan that I use for circulating air. This fan runs 24/7 and I have had no issues. The speed controller allows me to slow the fan down to make it more quiet. I just bought another one to control the fan on a cabin heater fan as well.

I used this controller to mod my Printrbot Metal Plus 3D printer, and it works great! I have it set up to regulate voltage between a secondary 24v PSU and an external power control module that now runs the printer's heated bed. Basically, this was an easy way to "dial in" the voltage in order to heat the bed faster (WAY faster!), while not overloading the heater PCB. Had to fiddle with the pulse width modulation switches to get it to work, but work it does! Great product!

Does not work and I can't find a phone number or way to send message threw amazon. What a joke. If someone cares or can help me please call 321-795-7141. half my frustration is due to amazon not giving you an easy way to reach out and solve issues if you can get me help i will change rating thanks

At the top in large letters the description says 30Amps, when you get down to the product description in small letters, it says maximum 10Amps. Failed with the fans I was trying to control. I really dislike this kind of marketing and there is no excuse for it. Product description should match the large bolded description up top. I would not buy again.

Great controller for dual electric radiator cooling fans. Small, well built and works good.Very disappointed that there was no paperwork of any kind included.A simple schematic verifying wiring connections and dip switches would bring a 5 star rating everytime.Thankfully the info is provided on the amazon product order screen.

Fan controller works great (slows the Dual 12 in fans down to ZERO/off). Good quality (black plastic) housing. No noise that I can hear ( I have a Chevy 350 w/ Flowmasters, LOL).

Came quickly, works nicely. My owner comments would be it would be nice for the wire ports in and out to be a hair bigger. Solid seller.

This controller works flawlessly - exactly what I needed to control two 12 V fans running off an 18 V power source in a portable cooler air conditioner.