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Nest Protect

The smoke alarm that thinks, speaks and alerts your phone.

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The alarm goes off and your mind starts to race.

  • Where’s the problem?
  • Is it smoke?  CO?
  • Burned popcorn?

It’s time to expect more from your smoke alarm.

Nest Protect has been redesigned from the inside out. It has a Split‑Spectrum Sensor, tests itself automatically and lasts up to a decade. It’s also the first home alarm you can hush from your phone without any extra hardware required. And it tells you what’s wrong and can even alert your phone.

Meet the Nest Protect. The smoke alarm other alarms look up to.

Count sheep, not chirps.

No one should be woken up by a low-battery chirp at 2 a.m. When you turn off the lights, look for a quick green glow. That’s our Nightly Promise. It means all your Nest Protects have tested themselves, the batteries are good, and there won’t be any chirps. Sweet dreams.

Nest Protect

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A Nest home.

Nest products are made to work together. And they can even work with lights, locks and other products in your home.

  • Nest Protect

    Nest Learning Thermostat

    Heating systems can cause carbon monoxide leaks or spread smoke through your home in a fire. In an emergency, Nest Protect tells your Nest Thermostat to turn off the heat to keep the danger from spreading. See how it works >

    Buy now >
  • Nest Protect

    Nest Cam Indoor

    If your Nest Protect senses smoke or carbon monoxide, Nest Cam will automatically record and send you a video clip if it’s connected to Wi-Fi. And the entire video will be securely stored in the cloud so you can go back and see what happened. See how it works >

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  • Nest Protect


    There are a lot of products that work with Nest. Because gas heaters can be dangerous in a smoke or carbon monoxide emergency, if Nest Protect goes off, your Rheem water heater will turn off. See what else works with Nest >

Click to see what works with Nest Protect:

  • Mobile alerts require working internet and Wi-Fi.