this post was submitted on 13 Jan 2024
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How is the notification sent if there's no power to the house? Presumably no internet service then either. Or is it sent by a remote service that loses contact with your home socket?
My guess: the smart plug pings a remote server every minute or whatever. If the home server stops getting pings, it sends a notification.
Could have a dying gasp capacitor which allows the unit enough time to send the message before turning off.
Doubtful because that's a lot of work and expense to implement and useless if the router and modem don't have power.
I could see such a feature if the device was designed to work over cell networks since it's not dependent on other user hardware.