sarah/config/packages/modules/climate/windows.yaml

binary_sensor:
  - platform: template
    sensors:
      living_room_right_window:
        friendly_name: Living room window
        device_class: window
        value_template: "{{ is_state('binary_sensor.living_room_right_window_on_off', 'on') }}"
        entity_id: binary_sensor.living_room_right_window_on_off
        icon_template: >
          {% if is_state('binary_sensor.living_room_right_window_on_off', 'on') %} mdi:window-open-variant
          {% else %} mdi:window-closed-variant
          {% endif %}

      bedroom_right_window:
        friendly_name: Bedroom right window
        device_class: window
        value_template: "{{ is_state('binary_sensor.bedroom_right_window_on_off', 'on') }}"
        entity_id: binary_sensor.bedroom_right_window_on_off
        icon_template: >
          {% if is_state('binary_sensor.bedroom_right_window_on_off', 'on') %} mdi:window-open-variant
          {% else %} mdi:window-closed-variant
          {% endif %}

      bedroom_left_window:
        friendly_name: Bedroom left window
        device_class: window
        value_template: "{{ is_state('binary_sensor.bedroom_left_window_raw', 'on') }}"
        entity_id: binary_sensor.bedroom_left_window_raw
        icon_template: >
          {% if is_state('binary_sensor.bedroom_left_window_raw', 'on') %} mdi:window-open-variant
          {% else %} mdi:window-closed-variant
          {% endif %}

      kitchen_window:
        friendly_name: Kitchen window
        device_class: window
        value_template: "{{ is_state('binary_sensor.kitchen_window_raw', 'on') }}"
        entity_id: binary_sensor.kitchen_window_raw
        icon_template: >
          {% if is_state('binary_sensor.kitchen_window_raw', 'on') %} mdi:window-open-variant
          {% else %} mdi:window-closed-variant
          {% endif %}

group:
  all_windows:
    name: All windows
    entities:
      - binary_sensor.living_room_right_window_on_off
      - binary_sensor.bedroom_right_window_on_off

#
# ─── CUSTOMIZATION ──────────────────────────────────────────────────────────────
#

homeassistant:
  customize:
    sensor.living_room_right_window_power:
      friendly_name: Living room window battery

    sensor.bedroom_left_window_power:
      friendly_name: Bedroom left window battery

    sensor.bedroom_right_window_power:
      friendly_name: Bedroom right window battery

    sensor.kitchen_window_power:
      friendly_name: Kitchen window battery