- On without a time set
- 60 minutes
- 45 minutes
- 30 minutes
- 20 minutes
- 10 minutes
The LED indicator on the scene controller will update to show what state it is in, so you can label the buttons and it will let a user see how much time, at most, is left before it turns off. It copies the behavior of non-smart timers for fans that many might already have installed in their bathrooms.
You can see the automation source code on GitHub: https://github.com/sdwilsh/ha-zen32-exhaust-fan-blueprint
Feel free to post here, or create an issue in the GitHub repository.