Hi there,
since there wasn’t an integration for receiving messages from professional alarm systems like Honeywell/Telenot via VdS2465-S2 protocol, I started creating my own integration using this node.js project as a template.
The VdS-2465-S2 protocol is mostly used in Germany, Switzerland oder Austria.
Feel free to test it. I am just at the beginning of development but successfully tested the integration with my own Honeywell DS6700 device with a permanent and encrypted connection.
If you find issues feel free to report but be patient, since I am not a professional developer at all and this is my first integration ever.
The installation instructions from the repository should help you enough
This Home Assistant custom component implements a VdS 2465 Server .
It allows your Home Assistant instance to act as a receiver (receiving center/NSL) for alarm systems using the VdS 2465 protocol over IP (e.g., Honeywell/Novar, Telenot, etc.)