Nest Protect Smoke And Co Alarm 2nd Generation Battery - S3000BWEF

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Nest Protect

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

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 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.

The smoke alarm that other alarms look up to.

Thinks before it speaks.

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.

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

It’s on your ceiling. And on your phone.

App Silence

Silence alarms with your phone, not your tea towel. If everything’s under control and there’s only a little smoke, silence the alarm from the Nest app.

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.¹

No Chirps 

Tired of being woken up at 2 a.m. by your smoke alarm? Long before it has to chirp, Nest Protect tells you that its batteries are running low with a message on your phone.

Safety Check-up

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

Family Accounts

Everyone in the family can have their own Nest account. No more sharing a password. You can all use your phones to silence and test alarms. And you'll all receive alerts on your phones if something's wrong at home.

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 Split‑Spectrum Sensor uses two wavelengths of light to detect smoke from both fast-burning and smouldering 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.

Source: Underwriters Laboratories

10-year CO sensor.

Carbon monoxide is poisonous, but you can’t see it or smell it. That’s why Nest Protect has a long-lasting carbon monoxide sensor that keeps working for up to a decade.

Thoughtful, not annoying Tests itself

You’re supposed to test smoke alarms monthly. But most 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 siren once a month.

Lights your way

If you need a glass of milk in the middle of the night, Nest Protect lights up as you walk underneath it. Pathlight is one of our customers' favourite features, so we've made it better and brighter.

Steam is not smoke

Has your alarm ever yelled at you for having a shower? Nest Protect comes with Steam Check. It uses custom algorithms and a humidity sensor to look for steam so that you can enjoy a nice, quiet shower.

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.

Look for the light ring.

In addition to its voice, Nest Protect uses colours to communicate. And we’ve given the new Nest Protect a brighter light ring so it’s easier to see in an emergency and better at helping you see things in the dark.

Nightly Promise

Nest Protect constantly monitors its sensors and batteries. A quick green glow when you turn off the lights says that everything's working. 


When you walk under Nest Protect at night, it will light your way. You can choose different light levels or turn Pathlight off entirely in the app.


If there's only a little smoke, like you've just burned toast, it will glow yellow and give you a friendly Heads-Up so you can check on things.


When smoke or carbon monoxide reaches dangerous levels, Nest Protect sounds the alarm, pulses red and tells you where the emergency is.

This is going to be easy.

You can set up your Nest Protect in just minutes using your iPhone, iPad or Android device. And Nest Protect is now even easier to install. But if you need help, we have customer support with real humans to answer your questions.

Dimensions & Weight
Length: 13.4 cm (5.3 in)
Width: 3.85 cm (1.5 in)
Height: 13.4 cm (5.3 in)
Weight:Nest Protect Battery: 379.0 g (13.9 oz)
Weight:Nest Protect Wired: 375.0 g (13.2 oz)
SensorsSplit‑spectrum smoke sensor , 10-year electrochemical carbon monoxide sensor , Temperature , Humidity , Occupancy (120° field of view up to 6 m [20 ft]) , Ambient light , Accelerometer , Microphone
Battery:Battery model: Six long-life AA batteries (Energizer® Ultimate Lithium “L91”) , Wired model: Three long-life backup AA batteries (Energizer® Ultimate Lithium “L91”)
Wireless:802.11b/g/n (2.4GHz) Wi-Fi , 802.15.4 (2.4 GHz) , Bluetooth Low Energy
Operating temperature:The alarm should not be installed in locations where the normal ambient temperature is below 4 °C (40 °F) or exceeds 38 °C (100 °F). Humidity range: 20% RH to 80% RH (non condensing).
Audio:Speaker loudness: 80 dB @ 1 m (3 ft) @ 1kHz
Horn:85 dB SPL @ 3 m (10 ft)
Warranty:Two-year limited warranty.
Certification:Nest Protect has been tested to comply with safety standards ULC S531 and CSA 6.19 set out by ULC and CSA Group.
External Buttons:RGB colour ring with 6 LEDs
What's in the box:Nest Protect: 2nd Gen Smoke + CO Alarm , Backplate , Four screws , User guide , Welcome Guide , Six long-life AA batteries (Battery model) , Three long-life backup AA batteries (Wired model) , 120 V AC connector (Wired model) , Three wire nuts (Wired model)
Requirements:Wi-Fi connection, Phone or tablet with iOS 8 or later, or Android 4 or later , Free Nest account.

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