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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?
  • Burnt toast?

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 for up to a decade. It's also the first home alarm that you can silence 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 that other alarms look up to.

Count sheep, not chirps.

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

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 CO leaks. In an emergency, Nest Protect tells your Nest Thermostat to turn off the heating to keep the danger from spreading. See how it works >

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  • 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 stored securely in the cloud so that 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. If your Nest Protect detects smoke or CO, it can tell your Bosch oven with Home Connect to turn off to prevent it from being damaged. See what else works with Nest >

Click to see what works with Nest Protect:

  • Mobile alerts require working Internet and Wi-Fi.