New Elro Connects integration

I have proposed a PR to introduce Elro Connects as a new platform. The initial version will support the siren platform. Sensors for battery level and signal strength e.g. will be added later. If you are able to test or review the new integration, please feel free to respond!
Let me know I you have additional hardware for which support could be added!

Hi Jan, I was able to buy a refurbished K1 from Elro. It works now. Just a question? Which device from Elro are supported in the integration?

The integration has been tested with fire, heat, water and co alarms and also should would with the door/windows sensor. It will provide sensors for signal strength, battery and device state. Additional you get a siren entity for fire, water, heat and and co-alarms to test the siren from Home Assistant.

For all clearity, the integration is available via HACS. I have opened a a PR to add it to HACS default.
Till then you can manually add it:
See: GitHub - jbouwh/ha-elro-connects: Elro Connects K1 for Home Assistant via HACS