With 8 possible separate functions, Mistair is not only a humidity instrument, but it also allows you to see a more in-depth reading of air outside your door.  Using the toggle switch the display can be set to show present humidity and high or low humidity since last reset.  When Mistair is connected to the Mystic outdoor temperature and pressure instrument, it can record present dew point, high or low dew point since last reset, present heat index, and high heat index.