diff --git a/availability.yml b/availability.yml
new file mode 100644
index 0000000..d796059
--- /dev/null
+++ b/availability.yml
@@ -0,0 +1,104 @@
+availability:
+  - update.3d_printer_button_firmware
+  - update.3d_printer_enclosure_fan_firmware
+  - update.3d_printer_smoke_sensor_firmware
+  - update.ac_power_firmware
+  - update.access_point
+  - update.bathroom_1_firmware
+  - update.bathroom_2_firmware
+  - update.bathroom_3_firmware
+  - update.bathroom_4_firmware
+  - update.bathroom_color_left_firmware
+  - update.bathroom_color_middle_firmware
+  - update.bathroom_color_right_firmware
+  - update.bathroom_mirror_1_firmware
+  - update.bathroom_mirror_2_firmware
+  - update.bathroom_mirror_3_firmware
+  - update.bathroom_motion_firmware
+  - update.bathroom_music_button_firmware
+  - update.bathroom_thermostat_firmware
+  - update.bedroom_bed_button_firmware
+  - update.bedroom_blind_left_firmware
+  - update.bedroom_blind_right_firmware
+  - update.bedroom_blinds_button_firmware
+  - update.bedroom_button_firmware
+  - update.bedroom_mitv_firmware
+  - update.bedroom_motion_firmware
+  - update.bedroom_tv_button_firmware
+  - update.bt_proxy_1_firmware
+  - update.bt_proxy_bathroom_firmware
+  - update.computer_button_firmware
+  - update.computer_outlet_firmware
+  - update.custom_deps_deployment_update
+  - update.dining_blind_back_firmware
+  - update.dining_blind_left_firmware
+  - update.dining_blind_middle_firmware
+  - update.dining_blind_right_firmware
+  - update.dining_blinds_controller_button_firmware
+  - update.dining_plants_leak_sensor_firmware
+  - update.eps32_rack_control_firmware
+  - update.esp_rack_fans_firmware
+  - update.esphome_update
+  - update.file_editor_update
+  - update.fridge_leak_sensor_firmware
+  - update.frigate_server
+  - update.front_door_lock_button_firmware
+  - update.front_door_lock_firmware
+  - update.hallway_button_firmware
+  - update.hallway_light_firmware
+  - update.home_assistant_core_update
+  - update.home_assistant_operating_system_update
+  - update.home_assistant_supervisor_update
+  - update.humidifier_firmware
+  - update.humidifier_leak_firmware
+  - update.ikea_of_sweden_tradfri_driver_10w_firmware
+  - update.kitchen_big_light_firmware
+  - update.kitchen_button_firmware
+  - update.kitchen_dishwasher_firmware
+  - update.kitchen_sink_button_firmware
+  - update.kitchen_sink_leak_sensor_firmware
+  - update.kvm_firmware
+  - update.lego_bookcase_firmware
+  - update.mac_mini_firmware
+  - update.mosquitto_broker_update
+  - update.nas_firmware
+  - update.network_ups_tools_update
+  - update.node_26_firmware
+  - update.node_27_firmware
+  - update.node_29_firmware
+  - update.office_air_quality_firmware
+  - update.office_blind_button_firmware
+  - update.office_blind_left_firmware
+  - update.office_blind_right_firmware
+  - update.office_keylight_button_firmware
+  - update.office_window_sensor_firmware
+  - update.office_window_vibration_sensor_firmware
+  - update.osram_plug_01_firmware
+  - update.outside_sensor_firmware
+  - update.ozempic_sensor_firmware
+  - update.printer_button_firmware
+  - update.prusa_mini_button_firmware
+  - update.prusa_mini_outlet_firmware
+  - update.rack_laptop_outlet_firmware
+  - update.rack_outlet_firmware
+  - update.rack_smoke_sensor_firmware
+  - update.relay_switch_1x2_5kw_firmware
+  - update.samba_backup_update
+  - update.samba_share_update
+  - update.shower_1_firmware
+  - update.shower_2_firmware
+  - update.shower_3_firmware
+  - update.shower_4_firmware
+  - update.switch_poe_firmware
+  - update.table_lamp_1_firmware
+  - update.table_lamp_2_firmware
+  - update.table_lamp_3_firmware
+  - update.usb_rack_pwr_firmware
+  - update.usb_switch_1_firmware
+  - update.usb_switch_2_firmware
+  - update.usb_switch_3_firmware
+  - update.washing_machine_firmware
+  - update.washing_machine_leak_firmware
+  - update.wled_firmware
+  - update.wled_office_monitor_firmware
+  - update.z_wave_js_update
diff --git a/home-assistant.yml b/home-assistant.yml
index 201aa51..15ea0bf 100644
--- a/home-assistant.yml
+++ b/home-assistant.yml
@@ -115,6 +115,16 @@
         remote_src: no
         src: './build/automations/'
         dest: '{{ pwd_config }}/automations.yaml'
+    - name: Include availability vars
+      include_vars:
+        file: availability.yml
+    - name: Build unavailable script
+      delegate_to: localhost
+      template:
+        src: check-unavailable.yaml.j2
+        dest: './scripts/check-unavailable.yaml'
+      vars:
+        entities: "{{ availability }}"
     - name: Concat scripts
       ansible.builtin.assemble:
         remote_src: no
diff --git a/templates/check-unavailable.yaml.j2 b/templates/check-unavailable.yaml.j2
new file mode 100644
index 0000000..1b0aac5
--- /dev/null
+++ b/templates/check-unavailable.yaml.j2
@@ -0,0 +1,17 @@
+check_unavailable:
+  alias: '[INFO] Check unavailable devices'
+  sequence:
+{% for entity in entities %}
+    - choose:
+        - conditions:
+            - condition: state
+              entity_id: {{ entity }}
+              state: unavailable
+          sequence:
+            - service: notify.home_assistant
+              data:
+                message: >
+                  Device unavailable
+                  {% raw %}{{ {% endraw %} device_attr('{{entity}}', 'name_by_user'){% raw %} }} {% endraw %}is unavailable
+                target: [ "1109936159951441960" ]
+{% endfor %}