script

- alias: "Generic dimmer on sensor"
  mode: parallel
  sequence:
    - service: light.turn_on
      data_template:
        entity_id: "{{ light }}"
        brightness: 254
        transition: 1
    - wait_template: "{{ is_state(sensor, 'off') }}"
    - service: light.turn_on
      data_template:
        entity_id: "{{ light }}"
        brightness: 0
        transition: 3