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Nest Protect Smoke and CO Sensor - Wired

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Philips HUE Bridge UK/EU Compatible

Frequently bought together

Price for all selected : £268.00

  1.    This itemNest Protect Smoke and CO Sensor - Wired
  2.    Nest Cam IP Camera

Meet the all-new Nest Protect

Nest Protect has been redesigned from the inside out. It has an industrial‐grade smoke sensor, can be silenced from your phone, tests itself automatically and lasts for up to 10 years. It also tells you what's wrong and can even alert your phone.

The smoke alarm other alarms look up to.

Nest Protect is unlike any other smoke alarm. It detects both fast and slow-burning fires, and uses an advanced CO sensor to accurately measure the toxicity in the air. Nest Protect has a voice, too. It speaks up to let you know something's wrong and gives you warnings and instructions in case of emergencies.

Hush the Alarm From Your Phone

Nest Protect is the first alarm you can silence from your phone. Barely burned the popcorn? Get a friendly Heads-Up that you can silence using the Nest app.

Looks after you for up to 10 years.

Nest Protect is an industrial-grade smoke sensor that checks itself over 400 times a day and has been designed to keep you safe and sound for up to a decade.

It reduces false alarms by looking for steam.

Nest Protect uses its humidity sensor and an advanced algorithm to look for steam so that you can enjoy a nice, quiet shower.

Nest Smoke Ring

Nest Smoke- Smart

Safety shouldn't be annoying.

Tired of being jolted awake at 2 a.m. by a low-battery chirp? A green glow when you turn off the lights shows you that everything's OK.

You'll know, from anywhere.

Nest Protect can be controlled right from your smartphone, with the Nest App designed to push notifications whenever something's up.

Nest Smoke Sensor- Smartphone

Catch Nest Protect in Live Action

Nest Protect is the first innovative smoke sensor that thinks, speaks and alerts your smartphone. Want to know how Nest Protect works? Watch the video to see how Nest Protect can make your home smarter and your life simpler.

Quick and Easy Installation

Just check the smoke alarm you have now. If it connects to wires, you'll want Nest Protect (Wired). If it doesn't, you should get the battery-powered Nest Protect (Wireless). No matter which version you buy, installing the Nest Protect is extremely easy. You can set it up in just minutes using your iPhone, iPad, or Android device.

Nest Smoke- Easy Installation

A Nest home.

When you add new Nest products to your home, they automatically work together. You don't have to do any complicated setup. And you can control all of them, at your fingertips, from the Nest App.

Nest Protect+Nest Learning Thermostat
Nest Protect+Nest Camera- Compatible

Technical Details


  • Split-Spectrum Sensor
  • 10-year electrochemical carbon monoxide sensor
  • Heat sensor, ± 1 ºC (± 1.8 ºF)
  • Humidity sensor, ± 3% RH
  • Occupancy sensor, 120-degree field of view to 20 feet (6 m)
  • Ambient light sensor
  • Omni-directional microphone, 70 dBA SNR

Speaker loudness

  • 80 dB at 1 metre


  • 85 dB at 3 metres

Light ring

  • RGB colour ring with 6 LEDs


  • Three long-life AA Energizer® Ultimate Lithium backup batteries

Connectivity requirements

  • Wi-Fi connection
  • Mobile or tablet with iOS 8 or later, or Android 4 or later
  • Free Nest account


  • Out of the box
      UK: English (British)
  • Downloadable
      French (FR) and (CA), Dutch, Spanish, English (America)


  • Working Wi-Fi connection:
    • 802.11b/g/n at 2,4Ghz
  • Wireless Interconnect:
    • 802.15.4 at 2,4 GHz
  • Bluetooth Low Energy (BLE)

Operating Temperature

  • The alarm should not be installed in locations where the normal ambient temperature is below 4 °C or exceeds 38 °C.
  • Humidity range: 20% RH to 80% RH (non-condensing).

Size and Weight (Assembled)

  • Weight: 374 g
  • Height: 13.5 cm
  • Width: 13.5 cm
  • Depth: 3.9 cm


  • 2-year limited warranty For support, visit


  • Nest Protect complies with the following smoke and carbon monoxide alarm standards in Europe: EN-14604, EN-50291, EN-50271:2010, EN-50292.

In the Box

  • Nest Protect
  • Batteries
  • Back plate
  • Four screws
  • User guide
  • Welcome guide
  • AC 230 V connector
  • Three terminal blocks
5.00 / 5.0
1 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Awesome !!!!
This is an awesome bit of kit. The unit is a 'CO' monitor as well as being a smoke detector. Indicator lights verifying the systems are working and even has an adjustable 'night light' function .... Ideal at the top of my stairs. Easily wired into an existing system but all of your 'legacy' smoke alarms will need to be replaced in order to get full interconnection between the detectors, I intend doing that by ordering 2 more.
30 Mar 2016
Browse 4 questions Browse 4 questions and 8 answers
Why did you choose this?
Vesternet Store
Only smoke detector to do multi frequency smoke detection and also conform to building regs.
markstickley 5 May 2016
Only smoke detector to do multi frequency smoke detection and also conform to building regs.
markstickley 5 May 2016
Is it second gen?
Alexey K. 7 Oct 2016
BEST ANSWER: Yes it;s the 2nd Gen Protect. All our Nest products are the latest versions.
Can this be added to a vera system ?thanks
Marky 24 May 2016
BEST ANSWER: Yes - we have full details on how to include this in VERA and use them together. Using Nest with VERA - Using Nest with a Z-Wave System - Using Z-Wave with Nest -
Can it be used like the pope, e.g. be configured to work as an independent indoor siren within a Z-Wave home security system, where it listens to signals from sensors like door and window contacts or motion sensors, and sets off an acoustic alarm in case of intrusion?
Guest Visitor 20 Apr 2016
BEST ANSWER: You can't access the siren separately. The Nest Protect acts as a sensor - so its status can be seen in a Z-Wave system (depending on the controller you are using). This status can then be used to trigger scenes to make things happen on the Z-Wave side. But as it is a sensor you cannot control it (or its siren) from the Z-Wave side. This is the same as most Z-Wave smoke sensors - you have no access to activate the siren from other Z-Wave devices. Hope this makes sense.

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