Multiple input device for float switches to monitor levels?

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I own 5 different water sensors, none of which have proven reliable for this particular task sadly, though multiple sensors with remote probes would "Work" they would just need to be modified to be mains powered.

I have so far found these options:
https://www.amazon.com/FortrezZ-Z-WavePlus-MiMO2-Interface-Module/dp/B008D5066C/ref=pd_cp_60_2/146-7433433-0284707?_encoding=UTF8&pd_rd_i=B008D5066C&pd_rd_r=9d9d17c5-ad0a-4eaa-a7a6-e8fe6381603a&pd_rd_w=5qdGE&pd_rd_wg=3lVSH&pf_rd_p=0e5324e1-c848-4872-bbd5-5be6baedf80e&pf_rd_r=YR4MH60ZRB2YBX6JSK9D&psc=1&refRID=YR4MH60ZRB2YBX6JSK9D

This would allow 2 float sensors, the output part is unused so paying a lot of extra for none use there.

Again some options not used but a bit cheaper and could be useful for "othing applications" as well.