I am working on an integration for Elro Connects. The integration should allow users with Elro Connects fire, water or CO alarms to integrate those in Home Assistant. If you own Elro Connects fire alarms and like to test, you could add the elro connects integration with HACS.
Add the following repo to HACS https://github.com/jbouwh/ha-elro-connects/. You need to restart Home Assistant after downloading the custom integration. After the restart you should be able to add the integration to Home Assistant.
For each alarm a siren entity is created. If you turn it on, a test alarm request will be sent. You can turn it off to silenece a (test) alarm.
Let me know if you like this integration. If your device is not supported, or not working correctly, then let me known!