That is how a broad area monitoring program works.
It is done with air temps too.
Get a brain!
And who calibrates the units and insures that they are operating properly?
This is simply a private company making money off the public by selling these units to anyone who wants them - and who knows if the people who are installing them can calibrate them and insure that they are operating properly month-to-month.
Don’t be fooled by the fancy sounding name of the company ... :-) ...