Nest S3000BWGB 2nd Generation Smoke & Carbon Monoxide Alarm Product Code: 2501H

Smart smoke and carbon monoxide alarm. Industrial-grade, split-spectrum sensor detects fast and slow-burning fires. Can be controlled from, and will send alerts to, a smartphone. Sensor lasts up to 10 years.


  • 85dBA Alarm
  • Battery-Powered
  • 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Automatic Test Function
  • Override Function
  • Split-Spectrum Sensor
  • Smartphone Control


9V. BS EN 14604, BS EN 50291-1.
Additional Information
Technical Specification
  • Power Source : Battery-Powered
  • Brand : Nest
  • Product Type : 2nd Generation Smoke & Carbon Monoxide Alarm
  • Alarm Product Type : Smoke & CO
  • Model Name : Protect
  • Fixings Supplied : Fixings & Fittings Supplied
  • Current Type : DC
  • Total Product Weight : 0.38 kg
  • Model No : S3000BWGB
  • Battery Duration : Replacement Battery (Lithium)
  • Wireless/Wired : Wireless
  • Alarm Sensor Type : Photoelectric
  • Battery Type : AA
  • Colour : White
  • Pack Size : 1
  • Power Voltage Supply : 9 V
  • Manufacturer Guarantee : 2 Year Manufacturer's Guarantee (T&Cs Apply)
  • Pieces in Pack/Case : 1
  • CE Standard (Tested to EN...) : BS EN 14604, BS EN 50291-1.
Product Contents
Nest Protect, backplate, 6 x long life batteries and fixings.
Delivery & Returns


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€117.95 Incl. 23% VAT

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Nest S3000BWGB 2nd Generation Smoke & Carbon Monoxide Alarm is rated 4.7 out of 5 by 15.
Rated 2 out of 5 by from Smart, but not smart enough! This is a great smoke alarm (the lights, fact it talks, works out what the issue is, if it’s smoke or fire, if it’s clearing, battery life, design etc) and a brilliant concept, HOWEVER needs some work on the smart elements and notifications used to justify its hefty price tag. At the moment you get a (delayed) push notification which doesn’t work if you have ‘do not disturb’ enabled (iPhone), and is fairly quiet/innocuous. If my house was burning down, I’d want to know pretty quickly and without uncertainty so I could get out!! It needs a fast and loud notification. My BBC News app has a louder push notification!!! It DOESN’T work with Alexa - there is an opportunity here for if it goes off for Alexa to sound, link in with other smart devices to turn off, turn lights on etc. I can’t see it works with Google (who now owns it) with their smart devices either. The concept is you don’t miss the alarm and you know remotely if there’s an issue and (ultimately) you can get out of danger quickly and safely. With a push notification only, it misses this brief. Oddly, it also has a ‘warning’ function before a full alarm. It’s counter-intuitive as on their website it says modern fabrics go up in minutes. Every second counts in a fire so why delay!! It’s designed to stop going off for burning toast. Unless it can ‘smell’ the difference between toast and a fabric fire it’s a stupid feature (which I’ve switched off). Ideally (well, to be 5 star)...... It needs to work with Alexa to sound/alert, work with other smart devices EVEN IF on do not disturb. Improve the ‘push’ notification on the Nest App Have the ability to call you. Work with ‘do not disturb’ on iPhone (which I appreciate is a long-standing Apple gripe!!!)
Date published: 2019-09-12
Rated 5 out of 5 by from indispensable house device I bought my first NEST Protect three years ago, and it still protecting my house. This one is already fird NEST. I choose Nest because of the quality, reliability and simplicity.
Date published: 2019-05-22
Rated 5 out of 5 by from Nest smoke alarm Would recommend this nest alarm I have one in my kennels now for pice on mind 100% buy one
Date published: 2019-03-12
Rated 4 out of 5 by from Well made product Relatively simple to install and to use. I managed to link the thermostat with two smoke alarms within 20 minutes of installation. Easy app to use and so far so good. Like the test routines and the night light functions. Would recommend the battery version for ease of placement and installation.
Date published: 2019-03-03
Rated 5 out of 5 by from Reassuring well made product The third Nest Smoke and carbon monoxide alarm I have installed in my own house, I like the nighttime light and the fact it's checked over the internet, even the sound is tested automatically once a month. Expensive?, not really, it could save your life.
Date published: 2019-02-25
Rated 5 out of 5 by from Which? Recommended Smoke Alarm Although initially very expensive, once you work out the cost over 10 years, it is worth paying the extra for a Which? recommended product. Very easy to set up with the Nest App. The only issue ( which is not necessarily the fault of Screwfix) was that Smoke Alarm was manufactured in July 2017 and thereby will expire in 2027; in effect giving 9 years of cover. Somewhere, this has been sitting on a 'shelf' for over a year.Time will tell over the reliability, hence 3 stars.
Date published: 2018-09-18
Rated 5 out of 5 by from Nest detector Easy to set up and install, can't judge the reliability yet as the missus has not burnt anything in the kitchen, like the motion detection to illuminate when the light are off at night.
Date published: 2018-03-07
Rated 5 out of 5 by from Good Quality and value I purchased two of these one for the Kitchen and one at the top of the stairs, The one on the top of the stairs is handy as it light the way to the WC when its dark. Easy to install the screws go direct into the plaster with no effort at all and are very secure, The app keeps up updated with any issues, will expand to afew more in the house very soon for total safty
Date published: 2018-01-30
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