Seems to work well!
Have been using this for about a month. Seems to be well adjusted – starts the alarm process not-too-early, and works through “There’s smoke in the Kitchen” to “Smoke is getting thicker in the Kitchen – the alarm will sound” to “Alarm” in controlled steps. Frying bacon evokes the 1st level – turning on the kitchen cooker hood stops the process. Alarm status and controls are passed through to a smartphone. Have not tried to sync multiple smartphones. Yet.

Invaluable peace of mind
**Edit 2** over 2 years since purchase, still using the original batteries! Nightlight still on Medium! Very happy!

**Edit** 10 months on, batteries still going very strong 🙂 Nightlight still set to Medium!

Nest are quickly becoming a household name in the Smart Home sector and these Smoke Detectors prove why.
Ridiculously easy to install, setup and test. We also have the 3rd Gen Learning Thermostat and they work seamlessly together in the Nest App.

Having slight pyrophobia (fear of fire), these put my mind at rest and I know the house is safe even when I’m not there.
The night light feature is great and saves turning on lights that wake the household. We have the light level set to Medium and the battery is still going strong. (Important to note that you must use the Energizer Ultimate Lithium AA (L91) batteries for a guaranteed performance).

Not only are they functional, but they look great too and remind me a bit of a Wireless Access Point. The battery feature saves you having wires trailing everywhere or having to route them through the ceiling – great!

Good smoke/co2 detector, if only cheape
Had various issues setting up, requiring router restarts as well as Nest and app resets. Once up it was easy to put on ceiling, test is well thought through, and have linked it up to hue lights to have some proper smartness in the home.
Only downside was the price, which also prevents me from buying more for the home until they have a big discount.

"Almost" Everything You Need In The Ki
These alarms are great (We have installed 3)
The features they contain probably make this the most advanced in a smoke/CO detector on the market.
I have read some reviews that say that they don’t comply with building regulations, but having read the White Paper from Nest I’m pretty sure from my understanding that they far exceed the requirements of the building regulations.
The installation is quite easy albeit a few pointers I’ll expand on in a minute. Site registration is quick and simple. The connection to the wifi (Assuming you can remember your password) is over in a jiffy.

My only complaints are very minor regarding the installation into an existing circuit in existing wiring.
The installation kit contains:

3 off 3 way connectors.
4 off Phillips screws.
1 off wire with integrated plug
1 off mounting plate
1 off alarm (with socket for plug)

The choice of screws.
My first observation is regarding the choice of Phillips screws. Most screws and screwdrivers, in the UK, are Posidrive, many people don’t even know that there are two standards. You can use a Phillips screwdriver in a posidrive screw, but not the other way around. A Posidrive screwdriver will not fit into a Phillips screw. This means most people will not have the right screwdriver to put these screws i
I’ve included a photo showing the difference between a Phillips and a Posidrive screw

The number of connectors.
My next observation is the supply of only 3 off 3 way connectors. Most existing wiring will require 4 off connectors. Those being Live, Neutral, Earth and the Link. I over came this with a single chocolate block connector, but it would have been so nice if Nest had included 4 connectors in their kit. See my 2nd picture.

Lastly we come to the positioning of the plug.
As can be seen in pictures 3 and 4 the socket that the plug engages with is offset from the centre. The design of the nest and its engagement with the mounting plate means you can rotate the unit to get it straight on the ceiling. However as the socket is offset, you require a large hole for the plug to rotate in as it sticks back pass the base of the Nest and also past the mounting plate into the wall board. I used a 47mm hole saw as can be seen in pictures 5 and 6. This gave the plug a nice hole to rotate in once the back plate was mounted to the ceiling. However most people will not not have a hole saw like this.

Look really sma
I already had one Nest, but needed to replace my other smoke alarms which had gone past their use by date. Got three of the nests. Very simple to set up, just follow the app, as I already had one set up it just used the same settings. Gave them all a name and then fixed them to the ceiling. The ring is fixed with four screws that go straight into the plaster without any issues, felt firm afterwards. Then fix the alarm to the ring.Now when you test one alarm it automatically tests all of them.
They look very smart, much better than a normal smoke alarm. They are also all connected together so if one detects smoke, they all sound and tell you which one has detected smoke (or Carbon Monoxide).

ow this is good
oooo now this is a good product, right i know it is a bit expensive but look its safety and a good investment in your well being. The problem with all the other smoke detectors is they are so ugly and usually only a smoke detector, this looks good, is a smoke detector and a CO detector. Intalling it, very easy, i love they way it interfaces with my smart phone, speaks, can acts as a night light, can interface with other products, just so so many features. i also love that you can have more than one in the house an it will tell you where the smoke is, i have two, one in the hallway and another in the utility room, very impressed and a 5/5 from me on all aspects. i love that it interfaces with the heating system and if it detects CO it automatically switches off the heating, clever and extra safe.

Great product but pricey.
I was a bit put off by the cost, but as my old alarms (non CO2) were well overdue for replacing, I already have a nest thermostat, and am in the process of automating my home, I thought I would give these a go.
I have not been disappointed, and being able to mute the alarm when it’s cooking mid-haps triggering the alarm is great as we have a young baby at home. They also came in handy when my wife managed to set the kettle on fire whilst I was next door and was able to run home and investigate.
As one might expect, the night light feature has been the most used, and is great for avoiding tripping over the car when stumbling to the kitchen to make a bottle in the middle of the night. It’s not so bright that it wakes you up, but provides just enough light to see where you’re going without having to fumble about for a light switch.
Overall they’ve been a great buy and will hopefully prove value for money over their 10 year life.

Outstanding produc
It is my first time I have a Nest product but I must say that it is an outstanding product! Wow
I was looking for a smoke/CO2 alarm to integrate on my IFTTT plataform and read a lot of comments, articles and videos. There are a lot of several more affordable sensors but if you read comments you will see that people have a lot of complaints about false alarms using cheaper sensors. At an apartment I don’t want to disturb no one during the night or weekends. Nest have a reliable solution and this is not cheap. It is your choice the balance of decision of getting a faulty or a reliable sensor.
Design, quality and easy to use are the best you can expect from such device.
It test itself more than 400 times in a day and do an overall test once a month with real sound where you can schedule the best time of the day for this self test.
It has a voice interface stating the test status and warning if the level of smoke or CO2 is increasing before sound the alarm.
App is very easy and clean! It has an Summary display just stating that “system is protected” which is the only thing you should bother at. Device itself runs all tests to grant you stay secure.
It has a convenient led that lights up at dark and people get it the room, what they call “path way”, very convenient and practical.
Fast and safe delivery, 5 stars!

Superb Customer Service and suppo
I’ll leave all the techi reviews saying how splendid these bits of kit are, and just say that although these are regarded as pricey by some, for such excellent safety in your home, it is really worth going for the best.
However, this review is about good Customer Service, which is so rare these days. I bought three of these units; two to start with and then a third for a new extention which housed a boiler. One of the alarms started to ‘eat’ batteries needing three sets in five months, whilst the other two are still going strong on the original supplied batteries. I contacted Nest Support. A new unit was despatched quickly and the return package was prepaid. I received a pleasant telephone call from their Customer Service department clarifying the return and everything was done professionally. In the unlikely event that you get problems with a Nest product, you can be assured a splendid support.

Great upgrade to existing smoke alarms.
These are really great and well worth the price tag in my opinion. Fitting is fine to do yourself with the mains power as long as you pay attention to the instructions which are very clear.

The most annoying thing is the absolutely tiny QR code that needs to be scanned. My phone camera had trouble focusing on such a small code so it took several minutes.

These are extremely sensitive, and are set off by the tiniest smoke from cooking, and any kind of vape smoke, so bear that in mind if you need them in a particular place. They are also set off by steam from the bathroom, but only if you have a bathroom with no extractor or window you can open.

The best feature is the night light which comes on for you when stumbling through the hallway at night, and is enough light to see, but not so much to be annoying.

I installed two of these with no problems at all other than the QR code issue. The phone app is great and easy to use. They will last about 10 years, but all smoke alarms will stop working after this time because of the half-life of the radioactive element used to detect smoke, not because they want you to buy a replacement.

A good sta
Upon opening the product I was disappointed to find no supplied wall plugs, but quickly realised they were self-tapping screws of decent quality. Installing the back plate was a breeze, and you don’t have to be super precise with the alignment with any nearby walls as once the detector is attached it can still be rotated for finer adjustment.

The companion app is okay as far as smart home apps go, although it had trouble with my postcode format despite my location being set to UK. I ended up punching in a postcode I knew from a few miles away, which it accepted. I don’t want my smoke alarm knowing where I live anyway.

The rest of the setup was painless and once the initial self-test was completed you’re not really left with anything further to do. The alarm is loud and very similar to a non-smart detector alarm sound.

The (default setting) pathlight I found initially underwhelming, but it comes into its own in pitch-darkness. It’s still very dim, but going from no light to some light is a useful feature. I’m really not sure how effective this would be in a smokey atmosphere, and hopefully I’ll never find out, but in my mind I see this as an everyday convenience rather than a selling point safety feature.

100 does seem a bit expensive for a smoke alarm, but to be honest I didnt get much change from 50 when I last bought a ‘dumb’ smoke and CO detector. If it lasts the rated 10 years, that’s 10/year + batteries, which is really not a huge price to pay for something that could potentially save your life.

I really like the fact it self-tests regularly and will report any problems automatically. Admittedly, my other smoke alarm only ever got ‘tested’ when I burned the bacon or made teriyaki chicken, so if you can put a price on peace of mind you could make the argument that these detectors are good value.

I’m going to see how this detector goes, and as long as it doesn’t eat through batteries I’ll probably end up buying another one for upstairs based on my experience so far.

So far, so good.

Update: I had this a few months now and still going strong. But one thing I don’t like is it seems silencing an alarm from your smartphone has to be done via Bluetooth. I don’t have Bluetooth enabled on my phone, so this is a pain, and it’s actually easier for me to reach and press the button on the alarm itself. A nitpick maybe, but worth mentioning.

Protect your nest!
Did I need a ‘smart’ smoke alarm? No. Did I see this and then try to justify it? Yes.

Nest seems to almost create markets for things we don’t really need. But these products are very well made, designed and thought out. Our carbon monoxide monitor had expired, so I took the opportunity to purchase this after reading some reviews claiming the sensors it uses are really good. I wanted something reliable I could mount and not worry about and this certainly seems to be the perfect candidate.

In the box, you’ll get a user guide, the Nest Protect, a mounting plate and some screws. It’s as simple as you’d expect and takes about 15 mins to install. The unit itself feels very sturdy and well made and is quite nice to look at.

Fitting – I opted for the battery model as the Nest will let you know once batteries are running low, and I don’t have the wiring for a wired model in place. I was mounting this on a plasterboard ceiling so personally, I didn’t feel the screws alone offered enough stability. I’d recommend fitting with some wall plugs if you have a plasterboard ceiling too. 6mm wall plugs (red) will offer a nice snug fit. Note that the Nest Protect can be rotated on it’s base to lock it in, so you don’t have to get the base mounted perfectly straight. It’s also worth noting that it’s a pretty big device, so should cover up any screw holes from a previous fire alarm nicely.

Setup – Just download the app, create an account and scan the barcode/enter the serial. It’ll carry out a test and then it’s good to go. The alarm is much louer than my previous fire alarm which gives you the confidence of it being clearly heard.

App – The Nest app is nice and clean and as expected, allows you to control the settings of your Protect. It has a log of when it has carried out checks, been activated etc. The protect also has a nice little light that is automatically triggered on it too which is perfect for hallways and landings at night. You can control the strength of the light via the app (min/med/max). As it’s LED I don’t suspect it’ll reduce battery life dramatically. On the app home screen, you get a nice green indicator to show all is OK. You can also use the app to schedule the monthly check the alarm runs itself. It’s a shame you can’t fine tune the time (it offers windows such as 7am – 11am), but it’s a reassuring feature. As is the fact that you can be notified if the alarm goes off remotely which is the major selling point of this. One other feature I was really impressed to see was the option to have the Nest Protect turn off your heating if it detects a CO leak. This only works if you have a Nest Thermostat and whilst it probably won’t help much if there’s a leak, it may offer some precious time. This is a clear example of how much thought goes into Nest products and integration.

I can’t comment on battery life and since it uses alkaline batteries, it can’t monitor how much is left. I assume it will let you know when it is close to running out though. It’s worth noting it uses long life batteries (included) so bear this in mind when replacing them.

Overall, I’m very impressed by the device so far. My only reservation is the price, but when you factor Nest claim it ought to last 10 years, it’s an investment. And the price covers Nest’s costs to offer you that 10 years worth of updates, monitoring via their servers and support. It does feel overkill for what you need, but you’ve probably made your mind up about it if you’ve got this far!

Expensive, yes but....
I love these. So you are thinking as I was, that is an expensive toy; especially when you can get a smoke alarm for under 10. This, however, is a key part of your smart home protection. The key thing is that you have active monitoring of the location you put it, wherever you are, via the app. You get status alerts for everything and it hooks in with your nest cameras, so if it notices something, the cameras come on too. So, apart from the peace of mind of knowing that your sensors are working, you can have these act as night lights. No need to have a separate hall light for that trip to the loo at midnight. These give a gentle light to guide your way. This light isn’t harsh, it is good enough for you to see your way but not to burn your eyeballs out of their sockets. This nice feature means that I can turn all the lights off downstairs, then go up to bed without having to turn the lights on, these helpfully light my way. I have had battery ones for just over a year without changing the batteries. However, now that I love them (and have bought 4 more), I have gone for wired ones and am using the battery ones in awkward places, like where the boiler is, for extra security. These are great but best to get the whole package (cameras, thermostat and these) for the investment to truly make sense.

So cool!
This is so good compare to the normal smoke alarms! It gives you a heads up when it detects smoke which the alarm won’t suddenly go off. It also gives you a history in the app with time smoke was detected and it was cleared etc etc. You can control the alarm using the app so you don’t need to run to the smoke alarm and try to reach for the ceiling to turn it off.

It was very easy to install! Doesn’t need a drill at all and you can screw the backplate any way you want and when you attach nest protect you can have it in the angle you want.

The pathway light is such a lovely little touch too!

Decent Product, insufficient Software
Awesome product. Easy to mount and install, easy to set up.

Only issue I have found is the Software. There is no possibility to update the WiFi for the Nest Protect, you have to remove them from your account, and re-add them.This is quite annoying as you have to detach them, rescan the code on the back, add them to your account again, etc.

Fantastic produc
I love my little network of Nest smoke/carbon monoxide alarms. They work perfectly and look great. Last night I was grilling lamb chops and the coloured ring changed, the voice calmly announced that smoke was detected in the kitchen, the alarm might sound and that it would be loud (bless). The alert also popped up on my phone. Doors opened, extractor cranked up and my phone message said “smoke clearing in kitchen”. Absolute genius. These are expensive but in my view they are worth it. Just make sure you get the wired one as the battery only doesn’t conform to building regulations (which begs the question as to how it is able to be sold).

Nest Protected :-)
We already had wired smoke alarms, but they were over 10 years old.
Upgraded to Nest Protect to get CO alarm for extra protection as well, our first foray into the smart Home world.
We did the install of 3 linked alarms ourselves using our existing wiring (we are reasonably competent at electrical diy). Installation was straightforward once we’d worked out how to remove the old alarms. We were fortunate that our old alarms were mounted on a socket back box in the ceiling. The nest back plate is round and has numerous mounting screw holes which made it easy to line up the back plate with existing holes. Be sure to install the app, start up and add your alarms to the app and link them up before mounting them in their final resting place.The alarms then twist onto the back plate.
The alarms do a self test on install.
The instructions supplied are very good and it is a fairly straightforward process.
It is quite reassuring to see the light ring glow green when the light is turned off at night to know that all the alarms are working well.
The light ring also provides a night light (white) that comes on with movement so that you can see your way without turning the main light on.
The warning voice and subsequent alarm are reasonably loud, we have then in the hall and on the landing. Won’t be installing them in other rooms/bedrooms.
The Nest products will work with some smart light bulbs, it is possible to set it up to turn these lights on if the alarm goes off.
Through the app you can check that all your alarms are working ok, and see the last self test info, they test themselves numerous times a day. The alarms also do a full voice test once a month and report back as well.
If there is a problem when you are out/away you will get a notification, which means that you can either pop back home or get a neighbour to check for you, an additional protection for your home.
They are expensive, but for the additional features to a standard smoke alarm do make it worthwhile, these products are new and at the cutting edge of smart Home technology but also easy for a competent diyer to install (saving on installer charges).
Buy with confidence and enjoy a better protected home.

It’s grea
This is great – very sensitive which is good (I tested it with burnt toast) although I’m unsure how to test the CO defection. It’s feally loud and notifications to the app are great too. Very easy to set up.

Only downsides are the size (I didn’t think it would be so wide) and that you can’t hang it on a nail (like all other detectors) and have to use the big mounting plate provided (ie putting 4 screws into your wall or ceiling).

Looks the part, act the part.
Yes it’s expensive for a firealarm, but lets be honest you can’t put a price of your safety right !! Anyway. Easy to install if you have a current wired fire alarm. The system itself comes in a box with all required bits and bobs for install. It’s easy to install yourself, just make sure you switch off the current firealarms from the mains. Install should take around 15 mins per alarm. Once installed it’s a brilliant bit of kit. Warnings are clear, giving you plenty of time to act on them (my wife love cooking pancakes and is regulary smoking the kitchen out, newt gives us a warning there’s smoke and that we need to act on it or she’s going to set an alarm off, the beauty is also that it warns you on other Nests as well. So if she is smoking the downstairs out I hear an alarm on the upstairs one letting me)

Cannot recommend this enough.

Beautiful design, Seamless Operatio
When I was woken at 3 a.m. the other morning by my smoke alarm complaining that its battery was running low, I decided it was time for a more sophisticated solution. And this is — at so many levels.

First, the physical features. It may sound strange but it actually looks nice. Mounted on a ceiling, it doesn’t shout out its presence but, to the extent that you notice it, it’s quite attractive. So far as fixing is concerned, you don’t have to line up the backplate very precisely because, once you’ve aligned its lugs with those on the alarm, you can turn the unit as far as you like. Also, the unit is supplied with self-tapping screws that need no pre-drilling to mount it in a dry-lined wall or conventional ceiling.

Next, the set-up. This is a breeze. Download the Nest app to your phone, follow the instructions. You’ll need access to the back of the unit, because the app scans a QR code that’s located there to register the device. But it automatically launches your camera to do that, so it’s a doddle.

Finally, the operation. I won’t list all the Protect’s features, which are pretty exhaustive, and can be found on any of the technical review sites anyway. Suffice it to say that the app is well-designed and reliable, allowing you to control and respond to the alarm from your phone. So, for instance, you can do a monthly test by hitting the ‘Protect’ button on the app home screen and following the prompts. This will update the log, so you can see the dates and results of all previous tests. There are also some nice little touches. The light ring around the alarm’s central button lights up (white) if you walk under it in the dark; and it gives you a brief green glow when you turn the lights out at night to confirm it’s functioning correctly.

So is it worth it? Well, you could buy half a dozen standard CO/Smoke alarms for the same money. But they only warn you of a fire you’re close to anyway. This will tell you there’s a problem at home wherever you are and what room it’s in, if you have several installed. And it will launch your phone app with the emergency number pre-selected for a quick call to the fire brigade. That’s a lot of reassurance for 25p a week (based on a 7-year lifespan), quite apart from the sheer convenience of the thing. As with any insurance, you pays yer money and you takes yer choice…

An amazing product which brings a smoke detector to a complete new level.
I have been so impressed with this product that I went and bought 2 more. You can schedule them to run a full test at a time that suits you, so let’s say once a month between 11:00 and 16:00. The device check itself continuously and sends you a report on your phone. What attracted me to it was the fact you are able to mute it with your phone if it goes off. I got so fed up with being waken up in the middle of the night for a false alarm (often triggered by bugs or spiders getting into the smoke alarm) or because the battery was running low. The Nest Protect also acts as a night light and turns itself on when it senses movement near it. The lady voice is also a very cool feature. It relies on your WiFi when you set it up but then works completely fine without it, just in case you were wondering what would happen if the internet was down or you had a power cut and a fire starts. It also tells you whereabout in the house the problem lies. All in all, it is pricey but it is a very good product.

The New Watchdog!
After reading most of the reviews and articles, it seemed a logical choice to move onto a ‘smart’ alarm when the old one died.

We already had a Nest thermostat so it was a very easy addition to the app and family of devices.

I am not one to dabble with electricals (one for certification reasons and two I’m just scared of the damn stuff) but with the very simple instructions and diagrams, even I managed to swap out the old husk for this shiny new friend.

My only criticism is that the only diagram shows an alarm on a ring circuit. We live in a small flat with only one alarm so we only had single connections. A brain figured it out so no issues, but it would have reduced time by 10 mins or so.

So far, the protect has been stable and happy with the nightlight feature being the perfect addition to the hallway.

We are also both vapers (ex-smokers) and the alarm hasn’t reacted once. Which is good.

Very good but not grea
I like this piece of kit – I wanted it just so I could receive an alert on my phone if anything was wrong. Watch the video under the images section of the product description, it is impressive. I only gave it 4 stars however as the app software I feel could do more and for the price I wasn’t amazingly impressed with the functionality – I thought some level of further innovation would be cool. Also the fact that it needs replacing in 10 years makes was a bit odd I found – surely technology now a days isn’t disposable for that price? Maybe its just me

Amazing product, glitchy app, below standard email support.
It’s great and works very well, I went for the wired version which was easy to install, we did however have an issue with hiding away the cabling in the ceiling as the size of the connectors are supposed to sit in a plastic casing in the ceiling which most UK houses do not have. In the end we had to make quite a large hole in the ceiling to accommodate the power lead, but it was a small price to pay for such a good product.

The product itself is flawless but the app needs some bug testing as isn’t great and struggles to load data. No issues on the browser site though.

The customer services responses via email aren’t great either, they used templated Salesforce responses which are erroneous and I would have expected better from a premium brand.

I would’ve given five stars but the customer experience relating to aftersales support is pretty poor. I hope they improve it.

Smart looking and very functional
These are great. I now how 3 second gen smoke alarms (2 wired and one battery) and 1 first gen smoke alarm. They are fairly straightforward to setup however i had a few issues trying to discover the NEST network it asks you to connect too. Eventually standing closer to the original device solved the issue.

Once connected they all link together so if the kitchen downstairs detects smoke. The voice comes on upstairs telling you “There’s smoke in the kitchen” and on every other device. The testing functionality is great as it tests smoke and carbon monoxide separately and repeats the process on other devices without having to go to each one.

The nightlight function is great. You can have this on all the time at night or on when it detects movement. Beats a night light plugged in at floor level. With the smoke alarm on the ceiling it lights up the whole landing enough to see where you are going but not enough to disturb you when sleeping.

Changing wifi networks or changing passwords once set up was a nightmare. I eventually had to remove all devices and add them all again. Overall its great peace of mind. Although expensive to buy its great to be alerted on your phone if there are issues.

It's a Beauty!
Well having had a Nest thermostat in my previous house in the USA and now back home in the UK I just had to have Nest again, now have the Thermostat up and running here and needed a few smoke and carbon monoxide alarms to remain in compliance with today’s laws. Looked at Nest again and without hesitation purchased two of the battery alarms.

Certainly not disappointed, now I know they are much more expensive than other alarms but these are classy, come with voice alerts, you can control on your smart phone and they test themselves, what more could you ask for.

Placing them in the living room and kitchen was a breeze, check the pictures out.

Will certainly be looking at the Nest Cam next 🙂

Worth a purchase, even if expensive… Highly Recommended..

Nest makes the mundane items impressively cool (again)
Had a Fireangel Smoke Alarm previously, and it’s claims of 10yr battery life fell short by a factor of 7x (in the bin after 14 months). Decided to go for one of these, Yes, it’s quite a bit more the reason why I got it were:

Replaceable batteries
Wifi connected, so you will get alerts when not at home
Carbon Monoxide detection

Very impressed, very easy to install, and very slick operation. Feels like a massively high quality bit of kit. I already have a Nest Learning Thermostat which has paid for itself many times over, so it’s no surprise that Nest have made something as mundane as a smoke detector and impressive feat of engineering. Well done Nest/Google.

2017 Edit:

My original is still working excellently, given the recent tragic events, I decided to replace my other garbage (and dangerous) FireAngel with another Nest Protect, this time for the upper floor, where it’s easier to get to the wiring above, so I went for the mains powered unit this time around. The mains unit still has batteries of course for backup purposes (that’s a legal requirement). I have knocked a star off this time, a whilst the battery unit is for sure a 5 star unit, the mains unit has a design flaw. The mains connector on the tip of the unit protrudes from the base and is offset from centre, and as the unit is a twist to fit, it means you have to make a very big hole in your ceiling, the full diameter of the offset mains connector. They could have easily, i’m sure, made it either flush, or if not, more central to reduce the size of the hole needed in your ceiling whilst fitting. Aside from this, it’s still an awesome product.

Essential Protection from a cool product (A must for tech lovers)
I have been looking at these for a while, as I needed 3 I couldn’t decide if I should make the investment or not – especially given my current smoke alarms are only just a year old and worked just fine.

I love technology and after about 3 weeks I had made the decision just to go for it. So I ordered 3 units which arrived the next day.

These are a pleasure to unbox, like an Apple product, you can see everything has been well thought through (I believe some of the Nest employees are ex-apple hence the comment)

Good quality instructions (would have been handy if the wiring diagram had been in colour) but fairly straight forward and I am no electrical expert.

I uninstalled my old units and followed the instructions in the Nest book and I had these all up and running and connected to each other within 40 minutes.

They look so much sleeker than the old units, a much snugger fit to the ceiling. With the easy fit bracket and twist on fitting of the main head unit, there are something even a novice could feel comfortable putting up.

They are all linked together and talk to each other, you can give each sensor a name and they will call themselves by a number of pre-determined names, such as Hallway, Kitchen, Upstairs.

Love the feature of “pathlight” which illuminates white light at night, this can me motion activated or set to permanently on, the children love this feature too.

Technology that is essential in protecting your home but is also cool!

Very happy with the purchase

Very cool, needs careful installation though
Very cool product. Easy to setup and the alerting is phenomenal. The only negative is the back-plate is crazy fragile, meaning you can easily drive the screw heads through the plate leaving you with a massive paper-weight. Nest provide spares but you have to wait an age to receive them.

Whilst this mistake is user error, I would expect a 89 smoke alarm to be made of more sturdy stuff.

Of the 3 I bought, 2 are installed and communicating with each other. So they work, well. I recommend them, just don’t be ham-fisted when screwing the plate into the ceiling.

Not just a smoke alarm
Carbon monoxide and smoke alarm yes, but much more than that as well. Motion sensitive night light, self check functions, spoken-word alarms and warnings as well as spoken guidance when setting up.

Really amazing bit of kit. When used in conjunction with the Nest thermostat they can be used as sensors to detect if you’re in the house or not so the Thermostat can go into Auto-Away mode and turn off your heating.

Any alarms etc can be found on your mobile phone and the Nest App gives you access to the information from all the Nest devices from anywhere in the world.

Probably one of the best purchases we have made for a long time

If it is half of its current price, I will give it 5 stars
Expensive – that’s why it got 4 stars from me. I have the wired version, pretty simple to install myself. It only needs the 230v wires (Live and Neutral). The first one took me about 40 min, as I need to study the instruction manual. The 2nd one took me about 15 to 20 minutes. Most of those time were spending on taking the old smoke detectors out! My house is only about 20 years old, so wiring wasn’t difficult.

It does look better, then any other smoke detector, plus the night light function, makes it slightly more useful than others. The night light function is not bright (I sent it to the brightest), just enough light to see things.

As for the smoke detector functions – it says not to test it with flames. So far nothing triggers it yet, I will just have to trust it works.