BT for perfect opening time of Window in Bathroom?

[pete1019]

Hi,

any idea how I could use BT for the almost perfect notification when to close the windows in the Bathroom again?
I have a Window-Sensor and Humidity-Sensor in the Bathroom.
If needed, outside temperature-sensor would be possible.

When I took a shower it should look at the Humidity of course.
When I took a big #2 :) it's only about fresh air.

Differences it should work with: Summer, Winter for example.

Thanks a lot!