Nest Protect

We've all been there — stabbing violently with a broom stick at the annoying, chirping puck on our ceiling, trying to silence it — but a smoke alarm shouldn't be a nuisance, it should passively keep you safe without worrying about it. The Nest Protect ($130) won't drive you crazy, but it will still keep you safe. It features a glowing status ring (green means everything is okay, yellow gives you a warning about a potential problem, and red means there's an emergency), real voice alerts, and an interactive sensor that responds to the wave of a hand, letting you dismiss alerts if you burn your dinner. Set them up throughout your house and instantly access the status of various rooms from your smartphone or tablet, or use them to automatically light your way at night with the pathlight feature. Best of all, it interacts with other Nest devices, keeping you safer without you thinking about it.

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