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Title: doesn't work
Review: This does not control the speed of any of my fans properly (large or small, motors either with brushes or brushless) and causes loud buzzing. The speed control range only operates at the very top, and even then, barely varies the speed except on a very large workshop fan. I also tried this on a milwaukee power drill (motor with brushes) and it caused loud vibrations while preventing the motor from turning properly. I honestly can't figure out the intended market for this speed control. They really should specify that in the description. I returned mine.
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