Comment by hommelix
1 hour ago
Just an hypothesis:
A supermarket may have 30 freezers. You don't want them to beep loudly if someone forgot to close the door. Instead you connect them to a central monitor. A local employee can see on the monitor which freezer has a problem and go see the issue.
The monitoring is as well a proof that the cold chain was kept.
This network was local to the market. Then one day it was found better to collect these data to a modern dashboard, and so the local network ends on corporate network.
> You don't want them to beep loudly if someone forgot to close the door.
Why not? It works as an alarm, is simple in design and requires no external input.
They need to be checked 3x per day anyway for temperature so someone will notice eventually. And checking temperature must be product core temp so no remote monitoring. Unless haccp changed massively over the last 20 years to "we don't care anymore".