Nest Protect S2001BW Smoke and Carbon Monoxide Alarm (Battery): Rely on the calm voice of this Nest Protect alarm to alert your household in an emergency. Sync your phone with the system to receive updates, whether you're at home or across the country.
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This thing is definitely worth the extra money, especially to not have to hear the smoke alarm go off every time we cook. The smoke alarm will send you a warning before it goes off so you can silence it before it ever goes off. It also has the option to act as a night light when it picks up on movement, which is great in the babies room.