I recently purchased / installed a Dome water sensor. It works great. I tested many times, and it was able to accurately detect when water was present and when it was dry.
My only issue is detecting if/when it goes offline. Is this possible? For example, if the device were to fail, I would never know. I tested by removing the device from my house, and there was no notification. Upon returning to my house, it became ‘online’ again after a couple hours. But there was never a notification. My concern is that a device could fail, and I’d never know if a water leak occurred during that failure.
Seems like a reasonable feature, doesn’t it? The SmartThings app definitely knows the device is no longer online, since it shows my Dome as offline/disconnected when out of range. I emailed support, and got the following:
There is no native way to get notified if a device falls offline at the current moment (at least not natively). It is something we hope to implement in the future, but in the meantime you may be able to find a custom workaround on our community here: https://community.smartthings.com
So, I took their advice and am asking here.