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Roost Smart Water Leak and Freeze Detector review: Roost makes a home in a flooded leak-detector market

The coils on the bottom of the Roost extend its range, and they don't rest on the ground, like the otherwise-impressive Fibaro Flood Sensor. Since the coils are slightly suspended, the detector won't set off a false alarm when placed in a drip pan, or on a similarly conductive surface.

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Chris Monroe/CNET

The Roost's biggest feature is its Wi-Fi connection. Sensors without a Wi-Fi connection, such as SmartThings and Wink, require a smart hub, which is a barrier to entry for many people. The two best sensors that do connect directly to your phone via Wi-Fi are both solid products, but they're more expensive -- the D-Link costs $60, and the Honeywell clocks in at $80.

Between an easy setup, a solid set of features, and Wi-Fi connection, the Roost seems like the best option on the market right now. But a few drawbacks keep it from total domination. First, it doesn't work with any major smart home platforms, such as Apple HomeKit or Google Home. This isn't the end of the world but it does mean you'll need to download another app, which is kind of annoying to keep on your phone for a passive monitoring device.

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The holes on top of the Roost make it susceptible to water damage, although the bottom is watertight.

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The second big drawback is that the Roost isn't waterproof. While the detector isn't a totally leaky bucket, it certainly lets water in through the alarm's top speaker holes. A few drops of water splashed on these holes while I was testing the Roost and the alarm kept going off for nearly an hour -- even after I'd removed it from the water. More worryingly, the Roost sensor won't survive being submerged. So it's a one-shot deal in the case of serious flooding.

Despite its weaknesses, the Roost's strong design and feature-rich interface -- all for a comparably low price -- make it one of the most appealing devices on the market. If you don't already own a smart home hub, then the Roost and the D-Link should be the top two contenders for your flood sensor of choice.

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