Great Product, does the same work as other speed controllers but for half the price. Very Pleased.

I'm using a 6"" duct fan for my indoor grow tent and it was really loud until I bought this. This controller allowed the motor to slow down but still offered significant airflow minus the loud noise! Great value and it gets the job done.

GrowAce has become my go to accessories shop for my grow after a great experience with their light fixtures. This item comes with the same durable and solid simple design and it works for what it is intended for. I'm at a point where I'm close to ditching this tent setup I bought and just get the rest from GroAce.com. This is the place to be!

I've been using this centrifugal extraction fan for my 5x5 tent and the fan was too powerful, so I decided to get one of these and test it. I was blown away by the results, I was able to tone down the fan speeds to my liking. It feels durable so I hope this would last.

Simple, efficient, easy to use, and it gets the job done. It significantly reduces fan noise at lower rpms. Item was well packed and arrived on time. Highly recommended!