Electricity smartmeter connection

Hi All,

Recently my electricity provider (Romande Energie in Switzerland) installed a new smartmeter in my property - it’s a Landis - Gyr e450.
For the past 4 years I have been using an Owl intuition 3 phase sensor using current clamps over MQQT, the readings were never accurate and I hate the forced subscription model.

Looking at the specs, my smartmeter has a RJ12 port with M-BUS using DLMS/COSEM (using OBIS protocol), and as Switzerland is not in the EU, Romande Energie do not encrypt the stream so no cipher key is needed.

So, I started my search for a device that would allow me to connect.
Reading the web, there are various posts from people trying to make their own or asking how to make this connection - but there is not much in the openhab space on this.

I have now found a device created by an Austrian company called Shrdzm, which met my requirements perfectly.

This device plugs directly into the smartmeter, and provides a MQTT client which my mosquitto server connected to seamlessly. There is also a HTTP Rest option available but this crashed my OH server - possibly too much overhead?

On my 3 phase supply, the smartmeter provides the following (in French, but those who are interested will understand):

Code OBIS|Désignation registre
0-0:96.1.0|N° de série fabricant
1-0:1.7.0|Puissance active instantanée import +P Wh
1-0:2.7.0|Puissance active instantanée export -P Wh
1-1:1.8.0|Energie active import totale +A Wh
1-1:2.8.0|Energie active export totale +A Wh
1-0:31.7.0|Courant instantané L1 A
1-0:51.7.0|Courant instantané L2 A
1-0:71.7.0|Courant instantané L3 A
1-0:32.7.0|Tension instantanée L1 v
1-0:52.7.0|Tension instantanée L2 v
1-0:72.7.0|Tension instantanée L3 v

This data comes every 5 seconds and really seems reliable.

If anyone is interested - let me know if you need any additional details.

Cheers
Will

Had similar plans. Can you post the details
of the device you found?

Sure, the device is sold directly by shrdzm.com and is called “Smartmeter Kundenschnittstellen Modul”

The module needs a 1 time firmware configuration for a supplier, so if you are using the same supplier as me than that part is already done.

This page shows the supplier compatibility:Link

If your supplier is not on the list, then you would need to help them with the setup process.

1 Like

Hi @wjones,

Thanks for sharing that, i have the same electricty provider & my new smartmeter was install last week in my property. Where have you buy this module? (the distributor seam’s deliver only in Austria)
Thanks for your answer

Hi Romain,

Use the contact form on the site, the guys there should be able to give you a postage estimate.

Good luck :slight_smile: