Notification for unavailable devices

Hi All,
I tried the search, but didn’t find anything reasonable. I have a following issues with ST. I have a lot of Aquara Zigbee devices. As it’s written in many topics before, connection to those devices is not so reliable due to the way how they works (connection every 50 minutes and if they missed by some reason - they become unavailable). Is there a way to get notification is any sensor / device become unavaliable?

I’ve used webCoRE to do this for a flakey Z-Wave device. I think it could be done for any device.

Thanks. I’ll try it.