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Google Nest Protect Smoke & Carbon Monoxide Alarm Wired S3003LWGB

4.9 (3,831 reviews)
SKU: 240609120515007 EAN: 0854448003778
Keep your family safe and your home protected by using this Google Nest Protect smoke and carbon monoxide detector. It’s a smart smoke alarm that thinks, speaks and alerts your phone whenever there’s a potential danger.\nThe alarm has a split-spectrum sensor, which uses two wavelengths to detect smoke from both fast-burning and smouldering fires. If something’s wrong, you’ll know immediately – it sends real-time alerts to you, and everyone in your family. If the alarm is sounding but everything is under control, it’s quick and easy to silence via the Nest app on your mobile phone.\nYou can test all alarms with a tap, and also be reassured that the alarm tests its sensors every day. When you walk under the Nest Protect alarm at night, a pathlight will switch on to help you find your way. \n• Split-spectrum sensor detects smoke and carbon monoxide in your home\n• Uses two wavelengths to detect smoke from both fast and slow-burning fires\n• Real-time alerts to your mobile – you’ll know immediately if something is wrong\n• Easily silence the alarm from your phone using the Nest app\n• Continually tests itself to ensure sensors are working properly\n• Voice alarm gives you an early warning, and tells you where the danger is\n• Pathlight feature lights the way at night, when you walk underneath it\n\nThis alarm conforms to the latest British Standards, but further intervention may be required to wake sleeping children. Includes voice alerts which have been shown to be more likely to wake children than standard alarms.\nThis product fully complies with UK (UKCA) and EU (CE) regulations. In Scotland, the law on fire alarms has changed as of February 1 2022 and which now requires all Scottish homes to have interlinked alarms. The law places the onus on the homeowner and/or landlord. If in doubt, please contact your local fire prevention officer for advice.
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Customer Reviews 3,831

4.9
3,831 reviews
5 star
3,479
4 star
265
3 star
42
2 star
19
1 star
26
Short life
3.0
January 21, 2026
dcc28b0c-86f7-5dd7-8f14-20f95f675177 Verified Purchase

The item was new in the box and great condition but these are supposed to have a 10 year life, the expiry on this one shows less than 7 years which seems very short for a product in the £100 range.

Smoke alarm
5.0
December 19, 2025
KGB service Verified Purchase

Alarm that will send u a message if ur away, it’s great

1.5 year lost due to old stock
3.0
December 14, 2025
James Henders Verified Purchase

Alarm bought in Dec 25, but manufactured in May 24. So 1.5 year of its lifetime is lost straight away. Shame Google don’t write the date on the box rather than only on the actual alarm.

The best smoke detector but sadly discontinued
4.0
October 26, 2025
RDickenson Verified Purchase

It is the best smoke and carbon monoxide detector in the World. My favourite feature is the motion detection night light. Monthly sound test is nice too.

Too bad Google discontinued it. Otherwise I would have given it 5 stars.

Great product
5.0
September 22, 2025
SteveB123 Verified Purchase

A terrific step up over the traditional Smoke detector. Easy to install and get configured, no more confusion about which alarm has gone off plus remote notifications !

Great Smoke Detector
5.0
September 1, 2025
AAA123456 Verified Purchase

Best smoke detector - sad that it's being discontinued by Google. Grabbed 3 before they disappear

great product
5.0
August 29, 2025
TadasC Verified Purchase

great product,had them on the main house and used on several projects. recomend

It doesnt work with Hub2 and will be discontinued
1.0
August 6, 2025
JackO118118 Verified Purchase

Totally disappointed with it, Please note Nest Fire Alarm series will be discontinued,it doesn't work with Google Hub 2 ( I should research more, AI gives wrong answers!) It was the only reason I bought it. I installed it in a remote garage which has Wifi and was hoping to get notification on Hub 2 which is located at home. How I supposed to get notification if my mobile phone is silent through the night?

Old stock
3.0
August 1, 2025
1974LC

My existing Nest protects were approaching their end of service life date, purchased a couple of replacements in July 2025 but expiry date of the new ones is March 2034 so I’ve already lost 16 months of service life from the new ones, poor really from a premium product

Only 7 years life left in brand new product that should last 10 years
3.0
July 24, 2025
Craig_88 Verified Purchase

These have been on Toolststion’s shelves for 3 years, so you only get 7 years remaining out of the 10 years expected from the product when new. The Nest app does not allow you to use after the expiry date

Available and cheapest
5.0
July 15, 2025
GoogleTed Verified Purchase

In stock and latest build which was better and cheaper than direct from Google by £15.

Goid product, now discontinued by Nest
4.0
July 14, 2025
Richw1234 Verified Purchase

Purchased July 25, manufactured date March 24. Unfortunately, there is no way of telling on sealed packaging. Nest stopped manufacturing last month, so the risk you take. Wanted to connect with Nest thermostate.

Great product with a hidden down side
5.0
June 19, 2025
AdC_ Verified Purchase

Fantastic product and easy to fit. Such a shame they’ve been discontinued- here’s hoping Google supports them for the remainder of their serviceable life. (10 years from date of manufacture, not purchase date!)

Our old smoke alarm still worked but it looked bulky and awful, this Nest unit is so simple to fit, easy to use, and it looks very good too.
5.0
April 13, 2025
b1f78c06-79c9-5630-a32d-df3542deb30a Verified Purchase

If there is a sexy smoke alarm, this is it........

Easy as 123
5.0
March 21, 2025
Westons Renovation Verified Purchase

Google products are really ready to install and use, it walks looks better than the battery equivalent, 100% recommend

Smoke alarm for home automation fans
4.0
February 18, 2025
AdrianRP Verified Purchase

Installation wasn't a breeze but instructions were clear, the only problem I had was the port for the alarm isnt dead centre so had to unscrew the mounting plate and rotate it round so the unit could fit on. You also can't use the Google Home app to setup, thankfully it refers you to the Nest App to setup

Nest smoke alarm
4.0
February 5, 2025
Maztec Verified Purchase

A good product but installation would be simpler if there was a dedicated dry lining box for it.Google don’t appear to have considered that

Old stock being sold - smoke alarm already 18 months old
3.0
January 30, 2025
Stephen C2398 Verified Purchase

This is are very good alarms. Like all alarms they have a shelf life, in the case of Nest it is 10 years. Toolstation are selling old stock which is date stamped July 2023. I purchased in January 2025, so I lost 1 1/2 years of life!

KEEP IT CLEAN!!!!!!
5.0
January 13, 2025
Dave 5 Verified Purchase

We’ve had nest smoke alarms installed for nearly a decade with no faults. Pathlight is brilliant at night. Keep the alarm away from dust and debris during install and I suggest using small connectors than the included wago connectors in the box.

Google smoke and CO alarm
5.0
January 10, 2025
S and H Verified Purchase

This is one of those products that you hope you will never find out how good it actually is. What I can say is that it was really easy to install and the set up via the app was simple too. We like the way it announces that it is about to go off so you can cancel it if you have just burnt the toast.
The motion sensitive night light is an added bonus. The promise that it will never chirp in the middle of the night to say it needs a new battery is very welcome. It is expensive, but possibly worth it.

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