I have updated the guide on how to connect an EMS gateway into Home Assistant.
The old guide was a bit outdated, and as most EMS Gateway customers use Home Assistant as their Home automation, up to date guides are necessary.

It uses a fresh install of Home Assistant version 2025.2.1 installed as HA OS on a Raspberry Pi as a starting point. So only the initial Home Assistant setup has been done. Creating a HA user and that’s it before we configure anything else.
Steps
In short these are the steps you need to take to get all the EMS entities into Home Assistant in a few minutes:
- Log into Home Assistant
- Create a new user in Home Assistant for MQTT
- Install the MQTT integration in Home Assistant
- Connect the EMS Gateway to the bus and log into the web interface
- Configure the MQTT settings in the Gateway
- BOOM! all entities will show up in Home Assistant within a few minutes.
See the following link to the wiki: https://bbqkees-electronics.nl/wiki/home-automations/home-assistant-configuration.html