Look what I just found! :o You will need google translate!

https://goo.gl/eZWN3E
HEKR module serial port transparent transmission protocol: https://goo.gl/eQuw32
Hardware Module Documentation: https://goo.gl/8KRdmX
More Juicy Info: http://docs.hekr.me/protocol/

In general, everything you guys ...

I think the WISEN App is built using HEKR SDK which is open source. I spent some time trying to figure out how it works and it seems like the communication between the meter and the App is happening via UDP Port 10000

Here is the link to HEKR SDK Source Code: https://github.com/HEKR-Cloud/HEKR ...