Hey there,
until the beginning of this year we had a Multical 401 energy meter in our house and I was able to read the data from it with an IR dongle. However now it got replaced by the energy company with a modern version 603. Sadly that one doesn´t work with the 401 script.
I know there is a plugin/script for HomeAssistant but that requires a huge overhead for a simple reading that could be done with a small arduino or esp8266.
Anyone with success ?
thanks