Learned my lesson after a trip last week… I have sensors for nearly everything, but somehow totally forgot about the Fridge / Freezer.

A power outage made my fridge lose it’s mind and turn off cooling, even after it powered back up. Unplug / replug seems to have fixed it, but all the food was spoiled when we got home. Simple $10 temperature sensor could have saved everything!

  • ArmoredCavalry@lemmy.worldOPEnglish
    0·
    1 year ago

    These are the ones I got, just because they are only $9 each, with a display as well. Each one has 2x AAA battery, so I’d expect they’ll last quite a while. HA also reports on battery level - https://www.amazon.com/dp/B0872X4H4J

    They are bluetooth, but I already had an ESP32 for other sensors. Seems to work great w/ Home Assistant / ESPHome so far!

    • Another_Reddit_Refugee@lemmy.worldEnglish
      1·
      1 year ago

      I currently have a similar setup (ESP32, BLE Sensors with ESPHome). Only problem is my sensors are Cr2032 and they go through a shit ton of batteries.

      Is there a write up somewhere on how to get these working? I’d like to replace all mine!