heres a simple one i am thinking of starting with in rooms manager:
if bathroom occupancy changes to vacant
if humidity has gone up at least X% from when room changed to occupied or engaged then
keep running exhaust fan till it goes down below humidity level set in the rules then turn off
else
if bathroom was occupied or engaged for less than Y minutes then
turn off exhaust fan
else
run exhaust fan for at least Z minutes
end if
end if
end if
