Inferring a power failure

[sburke781]

You may want to look at the Device Activity Check custom app, potentially for other use-cases as well.

[RELEASE] Device Activity Check - Get notifications for "inactive" devices

(Putting this at the top to make it easier to find...explanation of the app is below.) This app is available on GitHub and is also available from Hubitat Package Manager: To install, just add the app from the above (raw link: https://raw.githubusercontent.com/RMoRobert/Hubitat/master/apps/DeviceActivityCheck/DeviceActivityCheck2.groovy) to "Apps Code." Or, find it in Hubitat Package Manager. App Description: While there have been at least a couple apps with similar purposes, none did exac…