I picked up a couple of these and when you have wifi they can be set up to send you notifications. You connect to them via Bluetooth to set them up or if wifi is down. I like how they monitor my freezers and fridge. This way I can know when I need to fire up the generator to cool stuff down.

I in no way am affiliated with this company or seller, just wanted to share the usefulness of the product.

https://www.amazon.com/Govee-Indoor-...Y2hfYXRm&psc=1