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.
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The water valve works reliably. During testing, it responded to a leak sensor alarm in under 5 seconds every time.
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The ZigBee hub that connects the valve and sensor to your phone is small and easy to install.
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The leak sensor is comparable to many competitors -- although it is waterproof. That's a great addition that too many detectors forego.