Nest Protect Smoke and Carbon Monoxide Alarm, (Second Generation) – Wired 120V

(2 customer reviews)
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  • SAVE ENERGY WITH NEST: Nest introduces the 3rd generation Nest Learning Thermostat.
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  • WORKS WITH NEST: Nest has worked hard to design thoughtful devices to help keep you safe and secure.
  • THERE’S NO PLACE LIKE A NEST HOME: We love home. It’s the best place in the world.
  • Know from anywhere: Connect Nest Protect to Wi-Fi and it will send an alert to your phone if the alarm goes off or the batteries run low.
  • Wireless:Working Wi-Fi connection: 802.11b/g/n @ 2.4GHz Wireless erconnect: 802.15.4 @ 2.4GHzWireless.


$119.00 $85.00

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Last Amazon price update was: June 19, 2019 10:27 pm (Info)
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SKU: 854448003730
Nest Protect Smoke and Carbon Monoxide Alarm,  (Second Generation) – Wired 120V
Nest Protect Smoke and Carbon Monoxide Alarm, (Second Generation) – Wired 120V

$119.00 $85.00

Out of stock


Nest Protect. Thinks, speaks, and alerts your phone.

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

Nest Smoke Protect has been redesigned from the inside out. It has an industrial-grade smoke sensor, can be hushed from your phone, tests itself automatically, and lasts up to 10 years. And just like the original Nest Protect, it also tells you what’s wrong and can even alert your phone.

It’s your safety. Don’t settle.

You wouldn’t put up with a rotary phone or a black and white TV. So why do you put up with alarms that just beep and chirp? Shouldn’t your alarm sense smoke and carbon monoxide? And alert your phone when something’s wrong? What if it could light your way at night? Nest Protect does.

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Additional information

Specification: Nest Protect Smoke and Carbon Monoxide Alarm, (Second Generation) – Wired 120V

Item condition

New Sealed





Smoke, CO, Gas







Split-Spectrum Sensor, 450nm and 880nm wavelength

10 year electrochemical carbon monoxide sensor

Heat sensor, &plusmn, 1.8 degrees Fahrenheit (&plusmn, 1 degress Celsius)

Humidity sensor, &plusmn, 3%RH

Occupancy sensor, 120 degrees field of view to 20 feet

Ambient light sensor, 1-100k Lux Dynamic Range

Omnidirectional microphone, 70dBA SNR

Speaker, horn, and light ring

2 x Watt Speaker

Horn: 85dB SPL at 10 feet (3 m)

RGB color ring with 6 LEDs


120V Connector

Three long-life AA

Energizer Ultimate

Lithium backup batteries



California State Fire Marshal


Six long-life AA

Energizer Ultimate

Lithium batteries

Connectivity requirements

Wi-Fi connection with internet access

Nest app on phone or tablet with Android or iOS

Operating temperature

The alarm should not be installed in locations where the normal ambient temperature is below 40 degrees Fahrenheit (4 degress Celsius) or exceeds 100 degrees Fahrenheit (38 degress Celsius)

Humidity range: 20%RH to 80%RH (non condensing)


1.50" x 5.30" x 5.30"


0.87 lb.

Package Contents

Nest Protect (Battery)

Six long-life batteries (Energizer Ultimate Lithium "L91" AA)


Four screws

User's Guide

Welcome Guide




Price History

Reviews (2)

2 reviews for Nest Protect Smoke and Carbon Monoxide Alarm, (Second Generation) – Wired 120V


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  1. Brent B. (verified owner)

    Arrived on time and as described

  2. Ken Staley (verified owner)

    Excellent service, good costumer feedback and fast shipping. This is a company that cares to please their costummers!!!
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