Nest Protect, Smoke + Carbon Monoxide Alarm, Battery Powered

Product information

Nest Protect will keep you safe without getting on your nerves. This smart smoke and carbon monoxide (CO) alarm is designed to keep you informed without immediately howling at you while you're making your dinner, so you can stay safe without getting annoyed.

Alarm updates wherever you are
Protect will also send a message to the app on your smartphone using your home Wi-Fi connection if the alarm goes off or the batteries run low. It will also keep you informed of battery and sensor status before you go to bed, so you no longer have to put up with the alarm chirping throughout the night and keeping you up.

Safe for kids.
Children can sleep through alarms. So in addition to alarm sounds, Nest Protect uses Voice Alarms to wake kids up and help them avoid danger.

Easy installation
Nest Protect only takes minutes to install. Connecting to Wi-Fi and setting them up with your iPhone, iPad, or Android device also takes just a few minutes. Every Nest Protect in your home will connect to the others automatically.

Click here to learn more about Nest Protect.

System Requirements:
iPhone or iPad with iOS 5 or later
Android 2.2 or later
Free Nest Account

In the box:
Nest Protect
6 AA batteries
Four screws
User's Guide and Welcome Guide

Please note: This alarm should not be installed in locations where the normal ambient temperature is below 4°C (40°F) or exceeds 38°C (100°F)

About Nest Wave
During internal testing, it was discovered that movements near Nest Protect could be misinterpreted by Nest as a wave (a way of silencing the alarm). As of April 3rd, 2014 Nest Wave has been disabled on all Nest products to ensure maximum safety. Nest Protect can still be silenced during a Heads-Up alert by pressing the Nest button.

6x AA
Batteries Included
H13.4 x W13.4 x D4.1 cm
Horn loudness
85 dB SPL at 10 feet (3 meters)
Power source
Photoelectric smoke, carbon monoxide, heat sensor, three activity sensors, ambient sensor
Speaker loudness
80 dB at 3 feet (1 meter) at 1kHz


Click & collect

Free from John Lewis or Waitrose shops for collection tomorrow from 2pm
369 participating John Lewis and Waitrose shops

Collect + from a local shop from tomorrow - postcode exclusions apply for Collect+ deliveries

5000+ participating Collect+ shops

Standard delivery in 5 working days


Named or Saturday UK delivery


Named day UK delivery pre-10.30am


International delivery not available

We want you to be happy with your purchase. If you're not, depending on the type of product, you can make free returns in the UK via John Lewis shops, Royal Mail, Collect+, or MyHermes. If you need to arrange collection of large or heavy items, call us on 03456 049 049. For international returns queries, call us on +44 1698 545 454. Find out more about returns.

You'll find returns information on your delivery note. Unless faulty, we'd like you to make your return within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.


Find out more about returning products

Q & As

Rated 3.8 out of 5 by 4 reviewers.
Rated 5 out of 5 by Safety and reassurance from afar I have bought several of these alarms for our main home and country cottage. I am delighted with them. The set-up is easy once you've done one as long as you realise you have to link any extra alarms to the first one for the wireless to work. Tragically a neighbour of ours died of smoke inhalation recently which promoted me to overhaul our whole alarm system. With the iPhone app I can now be reassured that all is well wherever we are though hopefully we'll never have to have use of any of them. 24 March 2015
Rated 4 out of 5 by perfect.....almost purchased to monitor a store room. have others in the house. The only issue stopping five stars is the fact you can't have more variety of spoken rooms;other than that brilliant!! 19 March 2015
Rated 5 out of 5 by Peace Of Mind! As part of the new wave of home automation the fire alarm is perhaps the least glamorous of the products available in this category but the peace of mind provided by the Nest Protect makes it worth every penny. Very easy to set up and installation took approximately 45 minutes, aesthetically very pleasing once installed and more than a hint of apple-esqué design. The device is monitored via a smart phone or by pressing the ring on the nest itself where by it speaks in a clear, calm voice providing status updates. Will be purchasing another as the rooms are decorated to take advantage of the linked status updates where in the event of a fire will all notify you the same information e.g. Smoke in the bedroom. Highly recommended. 29 July 2014
Rated 1 out of 5 by Dreadful I really bought into the idea of Nest Protect. I bought 5. Within 6 months they have all gone wrong in some way. If you are lucky you just get an alert saying the sensor has failed. If you unlucky, you get false alarms that can only be silenced by removing the batteries from all the alarms. This is what has happened to me tonight. And my ears are still ringing. I'm just extremely fortunate that my kids are away, they would have been scared to death. I honestly cannot believe they have managed to get the smoke sensor so wrong. This is a technology that others have managed for years, and when it comes down to it, the only bit that actually matter. I'll be returning all of mine at the earliest opportunity. 02 July 2014
  • 2015-05-26T13:54:12.988-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_4, tr_4
  • loc_en_US, sid_1507111, prod, sort_default
1-4 of 4
Find out more about Nest Protect
Find out more about Nest Protect

Meet Nest Protect, the smoke and carbon monoxide alarm that speaks up to tell you what the problem is and where it is.


Product code :


More than 10 in stock