Adding to the power outage detection conversation, I just discovered the YoLink AC Power Outage Alert. I've had great success using YoLink water meter and water leak detectors with HA and then bridging with the Home Assistant Device Bridge after @ymerj added HADB valve support (thanks again!). I'm going to give this a try, and hopefully the detector reports as a switch, power device, or something else already supported. I'll report back on the results.
Edit: FYI, my use case is not for gracefully shutting down Hubitat. I just want to know if I had a power interruption however brief so that I can turn on some power outlets that default to coming up off.
