automation.yaml

- alias: Turn on main stairs and landing lights on stair sensor movement
  trigger:
    platform: state
    entity_id: group.stairs_sensors
    to: 'on'
  action:
  - service: light.turn_on
    entity_id: light.main_stairs_light
    data_template:
      brightness: >-
        {% if state_attr('sun.sun','elevation') > 3 %}
          255
        {% else %}
          3
        {% endif %}
- alias: Turn off downstairs landing lights 30 seconds after bottom sensor clear
  trigger:
    platform: state
    entity_id: binary_sensor.main_stairs_bottom_sensor_occupancy
    to: 'off'
    for:
      seconds: 30
  action:
  - service: light.turn_off
    entity_id: light.downstairs_landing_light