Sometime early today, my kitchen RODI water system sprung a leak. Leak sensor (Aeotec DSB45) picked it up and Hubitat closed the main water valve (LeakSmart). Kitchen is upstairs, so I shudder to think of how much damage it could have caused to the ceiling downstairs.
Also - notification via Pushover and Alexa-TTS.
A solid thumbs-up for home automation!