3 ms·

I live in Oakland, CA. Internet is definitely more reliable than electricity. My smart home devices send me an email when there's a power outage.

• kevinschumacher 7y ago
  Could that be coming from the smart home device manufacturer noticing the device was abruptly disconnected?
  • cbsmith 7y ago
    It could be, but it is probably just they have enough backup power to send the signal.
    • judge2020 7y ago
      It's more likely that the device sends a heartbeat every minute or so, either for notifications or just for this "device is offline" feature.
      • halbritt 7y ago
        In this case, no.
  • halbritt 7y ago
    The device itself is a Nest Protect fire alarm connected to 120VAC. It has a built in battery back up.