Sigfox based wireless water leak sensor

Roughly a year ago I have experienced the fatal error on my house plumbing system which turned my house into swimming pool. All ground floor was covered with 10cm of water and the total volume of water leaked from a broken pipe was more than 7 m3.  At that time I  hadn't installed any water leak alarm in my house what was the epic mistake. Currently, I have installed some cheap solution from eBay but it is rubbish. So I got an idea to build my own nice one based on Sigfox network.   ...
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