Nest Protect Smoke & Carbon Monoxide Alarm (2nd Gen)

Google NestSKU: 10097

Options: Battery-Powered


Meet the Nest Protect.

There’s never been a smoke and CO alarm quite like this. Nest Protect looks for fast-burning fires, smoldering fires, and carbon monoxide. It also speaks up when there’s a problem, can be hushed from your phone, and it will even message your phone in case you’re not home. Nest Protect has been completely redesigned. It has a Split-Spectrum smoke sensor, can be hushed from your phone, tests itself automatically, and lasts up to 10 years. It also speaks to tell you what’s wrong and can even alert your phone.

Always be in the know.

Arm the alarm and take your time leaving. With No Rush arming and disarming, Nest Secure lets you choose how much time you need. A friendly voice tells you how much time you have left. And if you forget to set the alarm, you can get a Remind Me alert so you can arm right from your phone.

It tests itself over 400 times a day and you can check the status in the Nest app.

It looks for steam to cut down on false alarms from a nice, long shower. When you walk underneath it at night, Pathlight will light your way.

A green glow when you turn off the lights means no low-battery chirps at 2 a.m.

It lets you test all your alarms with a tap, then sends you a full report after.

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

The new Nest Protect has been redesigned from the inside out. It has an industrial-grade smoke 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 just like the original Nest Protect, it tells you what’s wrong and can even alert your phone.

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

Thinks, before it speaks.

"Heads-up, there's smoke in the kitchen."

Nest Protect has a friendly human voice that gives you an early warning. That way you can handle burning toast before it becomes a burning toaster.

Tells you where the danger is.

"Emergency, there's smoke in the living room."

And when one speaks, they all speak. So, the alarm in your bedroom can tell you there’s smoke downstairs.

Phone alerts.

Everyone in your family can know what’s going on, from anywhere. When something’s wrong, Nest Protect sends everyone an alert in case no one’s home.

No chirps.

Tired of getting woken up at 2am by your smoke alarm? Long before it has to chirp, Nest Protect tells you its batteries are running low with a message on your phone. And don’t worry, that won’t happen for years.

Safety Checkup.

Test all your alarms with a tap. And once the test is done, you’ll get a full report.

Family Accounts.

Everyone in the family can have their own Nest Account. No more sharing a login. You can all use your phone to hush and test alarms. And you’ll all get alerts on your phone if something’s wrong at home.

See both fast and slow burning fires.

In the 1970s, it would take about 30 minutes for a fire to take over a room. Today, it can take less than 5. Sees both fast and slow burning fires.

The foam and particle board in much of today’s furniture make fires burn faster. Technology should keep up. The new Split-Spectrum Sensor uses two wavelengths of light to detect smoke from both fast-burning and smoldering fires. The foam and particle board in much of today’s furniture make fires burn faster. Technology should keep up. The new Split-Spectrum Sensor uses two wavelengths of light to detect smoke from both fast-burning and smoldering fires.

New 10-year CO sensor.

Over 1,000,000 homes in the US experience high levels of carbon monoxide every year.

Carbon monoxide is poisonous but you can’t see it or smell it. That’s why Nest Protect has the most accurate type of carbon monoxide sensor available. We also improved our carbon monoxide sensing algorithm. And we’ll keep working to make it better and better because people depend on it.

Thoughtful, not annoying.

Tests itself: You’re supposed to test smoke alarms monthly. But 9 out of 10 people don’t. So, Nest Protect checks its batteries and sensors over 400 times a day. And it’s the first alarm that uses Sound Check to quietly test its speaker and horn once a month.

Lights your way: If you need a glass of milk in the middle of the night, the new Nest Protect lights up as you walk underneath it. Pathlight is one of our customers’ favorite features so we made it better and brighter. Steam is not smoke: Has your alarm ever yelled at you for taking a shower? Nest Protect is the only alarm with Steam Check. It uses custom algorithms and a humidity sensor to look for steam, so you can enjoy a nice, quiet shower.

Count sheep, not chirps.

No one should be woken up by a low-battery chirp at 2am. 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.

Manufacturer Google
Manufacturer Product No. S3000BWES - Battery
S3003LWES - Wired
UPC 854448003679 - Battery
854448003730 - Wired
Sensors Split-Spectrum Sensor
10 year electrochemical carbon monoxide sensor
Heat sensor, ± 1.8ºF (± 1ºC)
Humidity sensor, ± 3%RH
Occupancy sensor, 120º field of view to 20 feet
Ambient light sensor
Omnidirectional microphone, 70dBA SNR
Size and Weight Height: 5.3 in (13.5 cm)
Width: 5.3 in (13.5 cm)
Depth: 1.5 in (3.85 cm)
Mass: 13.9 oz (379 g)
Speaker Loudness 80dB @ 3 feet (1 m) @ 1kHz
Horn 85dB SPL @ 10 feet (3 m)
Light Ring RGB color ring with 6 LEDs
Languages Out of the box: US: English, Spanish
Downloadable: English, French, Spanish, Dutch
Wireless Working Wi-Fi connection: 802.11b/g/n @ 2.4GHz
Wireless Interconnect: 802.15.4 @ 2.4GHz
Bluetooth Low Energy (BLE)
Batteries Six long-life batteries (Energizer® Ultimate Lithium “L91” AA)
Connectivity Requirements Wi-Fi connection
Phone or tablet with iOS 8 or later, or Android 4 or later
Free Nest account
Operating The alarm should not be installed in locations where the normal ambient temperature is below 40ºF (4ºC) or exceeds 100ºF (38ºC).
Humidity range: 20%RH to 80%RH (non condensing).
Certification Nest Protect has been tested to comply with safety standards UL 2034,UL 217and NFPA-72 setout by UL and California State Fire Marshall.
Warranty 5-year limited warranty. For help, visit
The Nest support team is also available by phone 24/7 @ 855-469-6378.
  • 1x - Nest Protect
  • 6x - Batteries
  • 1x - Backplate
  • 4x - Screws
  • 1x - User’s Guide
  • 1x - Welcome Guide

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