While working on the laser cut version of this Invention and adding new features to the code.

We decided that one of the discussions in the comments was interesting enough for us to do a little detour and test it out. 

The discussion was about the possibility of placing the device inside the fridge. 

Some pointed out that the main obstacles might be the fridge blocking the WiFi signal. 

Will the fridge block the WiFi signals to the wemos? 

Can we use the fridge as a Faraday cage?

You can find the answer to this question in the video.