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Nest Protect Smart Smoke and CO Alarm - Hard Wired

Product Specification

Key Information

Dimensions (H)13.5 x (W)13.5 x (D)3.9
Alerts For Carbon Monoxide Yes
Alerts For Smoke Yes
Instant Alerts Yes
Manufacturer Warranty 2 Year
Nightly Promise Yes
Pathlight Yes
Powered By Hard Wired
Silence False Alarms Yes
Split Spectrum Sensor Yes
Up To 10 Years Life Span. Yes
Works With Amazon Alexa Yes
Works With Google Home Yes

Mobile Connectivity

Mobile App Yes

Product Detail

Brand Nest
Brand Nest
Category Smart Alarms
Colour White
Dimensions (H)13.5 x (W)13.5 x (D)3.9
Smart Assistant Compatability Works With Amazon Alexa, Google Home
Smart Type Smart Smoke Alarm

Wireless Connections

Bluetooth Yes
WiFi Yes

Nest Protect Smart Smoke and CO Alarm - Hard Wired

Delivery Delivery from Tue 26th Mar Delivery from Tue 26th March From Tue 26th March From Tue 26th March


△ The earliest delivery date may vary based on your postcode.
Finance Spend over £199 to pay on finance


If your order is £199 or more, you can spread the cost with our finance options.

We've got a couple of simple payment options to help you spread the cost. It takes just 10 minutes to apply and we'll give you a decision straight away. We offer:

  • 12-48 month finance agreements
  • Buy Now Pay Later - this lets you take a 6 month payment holiday.

Key Features

  • Smart alarm monitors smoke and carbon monoxide
  • Instant alerts let you know what's going on at home
  • Silence false alarms from your phone
  • 10 year lifespan for long-term protection
  • Integrated light with motion sensor

Product Overview

Enjoy complete peace of mind at home with the Nest Protect smart alarm. It’s a smoke and carbon monoxide detector in one, so you can rest assured that all fumes will be monitored. This alarm can detect varying levels of smoke, so when you’ve burnt the toast you’ll get a calm voice alert instead of the full siren. It sends notifications directly to your phone, and you can turn it off remotely too – no more towel wafting required! It automatically tests its own batteries and sensors, and its 10 year lifespan means you’re protected for the long term. Plus, it has an integrated light with motion sensor, so it’ll gently illuminate your path at night when you need a glass of water.

This model needs hard-wiring into your home, so you may need the help of a qualified electrician to install it. It also includes 3 Lithium AA batteries as a backup in case of a power outage.

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Questions & Answers

Features we love


Through their line of smart products, Nest create a home that takes care of the people inside it. Their products are designed to talk not only to each other, but with other smart home products too, all coming together in the Nest app to give you a single point in which to manage everything. So by starting with a Nest, and adding more devices as you go, you can ensure your house tailors itself to you.

Find your way in the dark

It’s not just emergencies where this smart alarm is useful. There’s a built-in light that will activate if and when you walk underneath it. So if nature should happen to call during the night, the pathlight will softly illuminate your route to the bathroom.

Intelligently identifies the type of fire

Get advanced warning of any emergencies thanks to the alarm’s ability to differentiate between different types of smoke. The Split-Spectrum sensor contained within the alarm analyses the particles in the air, and by doing so can detect both fast burning and smouldering fires faster than more traditional set-ups. As a result, you can rest assured that when called upon, the alarm will activate early ensuring you can get to safety.

No more wailing

Whilst most alarms will just sound a siren, this smart alarm talks to you. If you’ve got several alarms around the house, the friendly human voice will tell you which room the smoke is coming from. It will also let you know when its detected smoke coming from the kitchen before sounding the alarm, so you won’t need to start wafting the tea towel if you’ve just burnt your toast.

Extra connectivity for extra safety

This alarm is compatible with your Philips Hue products and Nest Thermostat for an even more intelligent home set-up. By synchronising these smart devices, they can provide added safety in an emergency. If the alarm goes off, your lights come on, illuminating your path, and your thermostat will turn off the heating to keep any danger from spreading.

Works with smart speakers for voice control

This product is compatible with selected smart speakers for even greater control. Once you’ve synchronised your device with your speaker, you’ll be able to turn it on and off or adjust the settings with a simple voice command. So you can get comfy, and let your virtual assistant do all the work.

Customer reviews

5 / 5
Showing 3 of 3 reviews

Smart piece of kit

Really easy to set up using the app. Looks great - hardly much bigger than a regular smoke alarm. Where you have multiple Protects they all link up so if one goes off they all join in. Affixing the device to its ceiling plate can be tricky but isn't impossible. Would definitely recommend.

you get what you pay for

after getting a Nest Thermostat we decided it was time to update the smoke/CO2 alarms in our home. These were the obvious choice. Easy to fit but be aware that you will need a hole the size of the one in the mounting plate in your ceiling. They come with push fit connectors so they are easy to fit. You just scan the QR code on the alarm to add them to the Nest app. Love the night light as it makes a trip to the bathroom during the night a bit safer. Love that you get a green light when you turn off the light to let you know everything is okay. Find the verbal warning that smoke has been detected really great and they can tell the difference between smoke and steam. Hopefully will be adding the nest security alarm when they get round to releasing it in the UK.

Worth every single penny

For peace of mind alone this is worth every bit of it's price tag. Of course, these are never cheap but they are 100% reliable and the app will alert you immediately to any issues. It self-tests every day, you don't know it's doing it but the app will tell you. The most ingenious part BY FAR is the motion sensor light...Finding your way to the bathroom in the middle of the night is not an obstacle course anymore.. I bought two of them. They link togther perfectly with the app.
Delivery from Tue 26th Mar Delivery from Tue 26th March From Tue 26th March From Tue 26th March
Product information
Finance Spend over £199 to pay on finance

Any offers are genuine savings. Because we match the prices of competitors, there is the potential for prices to drop further. We will always offer our customers our price match promise. See terms and conditions.

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