Air Purifier - Add option to revert to previous Auto setting after Manual Timer expires

Owner of two new purifiers. So far so good, but would like to suggest a feature.

Currently you can change the speed… I.e. I have it on auto but let’s say I am cooking (or the real reason my smelly roommate opens his door) when I hear his door in the morning I kick it on to Turbo for an hour. Instead of shutting off after the hour, the option to revert back to auto would be great.

[Mod Edit]: Title modified to enhance search clarity.