This information applies only to those users who connected their WWN and Flair accounts prior to August 31, 2019. For more information, see our article on how Flair works with Nest after the Google transition.
There is an option in the System Settings menu that allows Flair to mirror your Nest’s Home/Away mode.
When Flair sees that your Nest is Away, Flair will also go into Away mode. When Flair sees that your Nest is Home, Flair will then return to Home mode.