I live in a Caribbean island, therefore, mine are always at full throttle 🤣.
It has 2 variable modes:
Smart: varies RPMs based of temperature.
Auto: Off, and turn on based on your settings on at what temp you want them to start spinning, then they go to top RPM.
You are a superhero, one of the likes we rarely see.
God bless you, your work has returned some hope on humanity for many of us.