I was going to use an average of non-bathroom non-kitchen room humidities and then add in some buffer to create a threshold for what constitutes a high humidity. The bigger problem is that the light switch humidities are often right by the door so you open the bathroom door on your way out and totally mess up the reading. So need to add a ceiling based one.
I should have gotten combo motion/brightness/humidity/temp sensors for the ceilings instead of these Loxone ones since they would be a lot more useful. Loxone should also have built in temp sensors into the bedside clocks since, you know, that is near where you actually are in a room.
(I was surprised to see behind the scenes that Loxone has done nothing for out of the box functionality for basic fan control, it is nuts at this point that you don't just tell Loxone, here is my layout, here is what equipment I have, and flip a switch and get a reasonable set of defaults. They aren't some brand new company anymore, they should be helping their installers a lot more.)