I tested Device Watchdog with the community Hubitat to ST Notification Pusher driver, and it works as expected. I assume any device that implements the "Notification" capability should work, though I think Pushover is the only natively supported option at the moment. (You could also easily modify a couple lines in the code to use a "speech synthesis" device instead, even if that device actually does regular notifications--this is an old workaround some people used before notification devices were well supported in order to get such devices exposed.)
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