Hi guys! I’m considering purchasing a Xiaomi air purifier 4 (possibly). I wanted to make sure I can use from the Home Assitant app, while the router’s firewall blocks its online connectivity outside the home network. Do the xiaomi devices connected in HA need online connectivity in order to continue to work?

Also…many of their wristbands series for example need at least to connect once in order to get an auth token that you can then use on gadgetbridge. Do you need any kind of shenanigans to get the purifiers to work on HA?