OpenGarage vehicle detection "Unavailable" makes automation triggers difficult

Configuration
2

You can’t do it entirely via the UI, but if you edit the yaml of your trigger you can specify ‘not_from’. See the documentation here: Automation Trigger - Home Assistant

Here’s one of my automation triggers as an example:

trigger:
  - platform: state
    entity_id:
    - alarm_control_panel.home_alarm
    id: MANUALLY_DISARMED
    to: disarmed
    not_from:
    - unknown
    - unavailable