The following blueprint is a simple example for configuration of Fire Alerts.
Requierements:
- Smoke Sensors are already configured in Home Assistant (device class smoke)
- Service notify.notify is available (should be the case if you use standard installation)
You have to select all sensors (list of entities) - that’s it.
Optional: The configuration of the message.
You can find the german version here:
https://www.it-und-hausautomation-blog.de/feueralarm/