Dometic CFX3 WiFi integration for Home Assistant – local control without cloud

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1

Hi everyone,

I have created a custom Home Assistant integration for Dometic CFX3 coolers:

The integration communicates directly with the cooler over the local WiFi network using the DDMP protocol. No cloud service and no external account are required.

Features

  • Local communication over WiFi
  • Current temperature monitoring
  • Configurable target temperature
  • Cooling on/off control
  • Compressor status
  • Battery voltage
  • AC or DC power-source status
  • Battery-protection setting: LOW, MED or HIGH
  • Automatic network scan or manual IP-address configuration
  • Configurable polling interval
  • Automatic rediscovery if the IP address changes

Installation via HACS

  1. Open HACS.

  2. Go to Integrations.

  3. Open the menu in the upper-right corner.

  4. Select Custom repositories.

  5. Add the following URL:

    https://github.com/JS-DE-Tech/hacs-dometic-cfx3

  6. Select Integration as the category.

  7. Install Dometic CFX3 WiFi.

  8. Restart Home Assistant if required.

  9. Open Settings → Devices & services → Add integration.

  10. Search for Dometic CFX3.

The integration was developed and tested with a Dometic CFX3 35. Other CFX3 models may also work if they expose the same local DDMP interface.

Feedback and compatibility reports for additional models are welcome. Please use the GitHub issues section for bug reports or model-specific observations.

2

Great work! Is there also a way to integrate the Dualbox with its two separate compartments? Currently, only a single container is supported.