I don't have either version, I have Max Air fan
But you got me thinking
This switch, do you mean the on off switch, a membrane push button monetary contact on a circuit board
Maybe a timer circuit powered from the fan input 12v with a signal sensor on the motor wires
When motor stops the timer starts, when it times out it momentarily closes the switch circuit
Just a thought, I don't have that fan, so I can't prototype the idea to a working model
Or if you can identify all the components on the circuit board you can enter them into a circuit design program and play around with the design yourself
There are free programs for this, for PC and android
