I went out of town for a couple weeks and monitored the house while away. Everything went better than expected. I only had one device go offline. The downside was that it was a door lock. Good thing it was the garage lock. Three others went offline only because the house sitter flipped a switch.
Question is, how can I use core to notify me when a device goes offline or unavailable. I have researched the topic, but am unable to understand how to make it work with what it said. Can anybody help me out on this? Thanks in advance!
Edit: I have lights, sensors, locks, and outlets on my system.