Hello,

I made some Interfaces for P1 Meter Ethernet and Wemos.
All working direct on Domoticz.
https://7er.nl/viewforum.php?f=2

Schematic is available for interested persons.

Also Modus interfaces Ethernet and Wemos
https://7er.nl/viewforum.php?f=5
Including software samples how to use on ...

I have build also P1 interfaces (7er.nl) with ESP easy that works with Domoticz.
The hardware you build specify the setting of your ESP Easy.
Marcel has his own protocol and didn't make the software on his interface.
You can use hard or software protocol and if hardware based then you have to select ...