I bought some wireless tag
I bought some wireless tag pros after my freezer died and we lost a ton of food to give us early warning if one of freezers or refrigerator started misbehaving again. Almost immediately the tag I put in our fridge warned us that the temperature was over 40 degree (f), and after confirming with one of the other tags, it was clear that the fridge was a goner, too. Who knows how long the fridge had been acting up. It can take a while to get all the settings tweaked just right, but it’s worth it.