The LeakSmart Complete Home Water Protection System uses a leak detector to trigger a smart home valve. That way, if a pipe bursts, the sensor can plug your pipe before too much damage is done.
The water valve works reliably. During testing, it responded to a leak sensor alarm in under 5 seconds every time.
The ZigBee hub that connects the valve and sensor to your phone is small and easy to install.
The leak sensor is comparable to many competitors -- although it is waterproof. That's a great addition that too many detectors forego.