Not everything in The Project is wireless, the Gas and Electricity sensors are (at least for the moment) wired, the Internet connection and, last but not least, the power supply, are too.
This is where the WAF (i.e. Wife acceptance factor) enters. Wikipedia has an extensive explanation about the concept. (Actually, it could also have been called Valentine Acceptance Factor on this day!)
We are not talking about expensive stuff (it's build rather on the cheap, isn't it?) here but having to cope with bizarre (and wired) apparatus in the flat.
The best way I found, on top of having a very accepting and forgiving spouse, was to enlist her and use her newly acquired illumination skills to decorate the wooden box.