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I totally understand monitoring the fridges remotely, i.e. making sure the retailer is careful about keeping frozen food... frozen.

Or detect a door that would not close anymore.

But why, oh why, did they allow someone to change the settings remotely? Wouldn't it work to just tell the local operator to adjust a physical knob when necessary?

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Turning the lights off or increasing the temp because the doors aren't being opened (or making the PID controller less agressive), when the store closes could save a fair amount of money. Yes you could set the time manually if you change store opening hours but if you have a dozen or a hundred units your underpaid manager isn't going to bother.

To allow remote work. Instead of sending an engineer, issues can be fixed by an engineer or technician on HQ, or an outsourced indian/philipino

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