This is an interesting item I ran across. We occasionally get calls regarding failed sump pumps or other basement water damage issues. There were huge issues this past Winter with basements that never had water issues in the past. The odd cycle of freezing & thawing combined with snow and extremely heavy rains created flooding throughout our area.
I will keep this on file and share it with clients that have concerns with water problems. It looks like a good solution and should provide the necessary early warning.