Allright, you have me at a disadvantage. I have no clue what I have here, but I am sure someone out there needs it. Look at the pics. I got this as part of a package deal, and I don't need this component, whatever it is. I have not used it. Looks like something you would plug into an AC drive to control its speed, but I have no idea what the "joystick" does or what the little motor is (declination, perhaps?).