A customer has a high-end range hood with a variable speed motor.
The controls for the fan and lights are difficult for his wife and daughter to reach, so he wants to add a speed control on the wall.
The controls for the existing fan are electronic, and I don't believe that putting a fan control ahead of them (or after them)is a good idea.
It would be (2) controllers wired in series.

Any thoughts?

Thanks,

John