Template as automation trigger

Configuration
1

I want to trigger an automation when a binary sensor changes state but only if it is with 5 seconds of another binary sensor changing state.

I’ve been trying something like this, without success:

- alias: trigger_from_switch_2
  trigger:
    platform: state
    entity_id: binary_sensor.switch_2
  condition:
    condition: template 
    value_template: "{{  (as_timestamp(now()) - as_timestamp(state_attr('binary_sensor.switch_1', 'last_changed'))) | int  < 5 }}"
  action:
    - service: script.notifications
      data_template:
        message: 'switch 2 triggered'
        speaker: 'media_player.kitchen_speaker'
        title: 'Test switches'

I can’t get the template to render in Dev Tools so don’t yet know if it will work as an automation trigger.

Would somebody please point me in the right direction?

2

If your template fails in Dev Tools, it will not work in an automation.

last_changed is not an attribute, so state_attr('binary_sensor.switch_1', 'last_changed') returns None.

Try:

{{ as_timestamp(now()) - as_timestamp(states.binary_sensor.switch_1.last_changed) | int < 5 }}
3

Thank you so much. I appreciate it.