Alert when cooling devices are off too long

device-off-warning.yaml

blueprint:
  name: Alert when cooling devices are off too long
  description: Many of my devices do have a power metering including the option to turn off the device. This is nice but we want to avoid turning off a fridge for hours accidentally.
  domain: automation
  input:
    switch:
      name: Switch Entity
      description: The switch we want to monitor.
      selector:
        entity:
          domain: switch
    max_time_off:
      name: Maximum Time Off
      description: How many minutes is the device allowed to be off.
      default: 15
      selector:
        number:
          min: 5
          max: 120
          step: 5
          mode: slider
    actions:
      name: Actions when it's too long off
      description: Actions (e.g. pushing a notification, TTS announcement, ...)
      selector:
        action: {}
  source_url: https://gist.github.com/robsonke/c714301b560081e9a76cfbf88f5e730f
variables:
  max_time_off: !input 'max_time_off'
  switch: !input 'switch'
  actions: !input 'actions'
trigger:
  - platform: state
    entity_id:
      - !input 'switch'
    to: "off"
    for:
      hours: 0
      minutes: !input 'max_time_off'
      seconds: 0
action:
- choose: []
  default: !input 'actions'
mode: single