Thanks to... 🙏
This project's existence is mainly thanks to all the information and regarding the KMP protocol people have put online over the years.
The MeterLogger project have left some notes for the development
of the MeterLogger for Kamstrup meters.
Also the work by Poul-Henning Kamp (and later Ronald van der Meer) in
GitHub: ronaldvdmeer/multical402-4-domoticz
was
inspiring to get started with exploring possibilities and testing my hardware.
Finally, also a shoutout to the Dutch community Tweakers where a forum topic pointed out the possibilities integrating these MULTICAL® meters (as provided by Dutch utilities) to non-cloud smart home. GoT: Kamstrup Multical 402 stadsverwarmingsmeter RPI3+IR-kop