Is it possible to have information when the device stop to work?
What device you are trying to monitor and what information you need? Are you looking for notification when device stops working or summary of what is not working?
Yesterday I was working on my sensors, so I realize my water leak sensor stop to work like a month ago and other two Temperature sensor too, I am think is if possible to see on Dashboard some information about sensor status, may be change the color when the sensor stooped to report…I am using the Hubitat.
Have you tried any of the device monitoring apps from the Hubitat community?
I haven’t personally tried it, but Eric M’s “Device Monitor” SmartApp was ported over from SmartThings and was a popular solution in the SmartThings ecosystem. I’m sure there are other similar solutions in the community as well.