We are in the market for a new refrigerator and I stumbled upon a feature on some Liebherr equipment called 'HomeDialog'. This feature enables one fridge to display and monitor the status of another fridge, which may be located in a cellar or another remote place you don't visit on a daily basis.

It communicates over the mains power line and it's supposed to be compatible with any other 'Net@Home' networked appliances. But 'Net@Home' doesn't sound familiar to me at all. Does anybody know more about this?
http://www.homedialog-system.com/html_H ... index.html