A Home Assistant automation that will play an audio message when a gate has been held open too long.

AlertOnPoolGateHelpOpen.yaml

alias: Alert on Pool Gate Opened
description: ""
mode: single
triggers:
  - type: opened
    device_id: 896de4d80d8fa631e58804be71b50b51
    entity_id: f40b16da6652e7402e9b819f707cedf3
    domain: binary_sensor
    for:
      hours: 0
      minutes: 0
      seconds: 15
    trigger: device
conditions: []
actions:
  - metadata: {}
    data:
      volume_level: 0.8
    target:
      device_id: ac06e6473cfa72853017940183a5ed52
    action: media_player.volume_set
  - target:
      entity_id: media_player.kitchen_speaker
    data:
      media_content_id: >-
        media-source://tts/tts.google_en_com?message=The+pool+gate+was+held+open&language=en-us
      media_content_type: provider
    metadata:
      title: The pool gate was held open
      thumbnail: https://brands.home-assistant.io/_/tts/logo.png
      media_class: app
      children_media_class: null
      navigateIds:
        - {}
        - media_content_type: app
          media_content_id: media-source://tts
        - media_content_type: provider
          media_content_id: >-
            media-source://tts/tts.google_en_com?message=The+pool+gate+was+held+open&language=en-us
    action: media_player.play_media