The best smoke alarm sets, compared.
Top pick: AEGISLINK ASW-MR31 Best value: XINDUM 2-smoke bundle – Highest listing-and-price part that is not the top pick, at about £69.48, for one fewer smoke head on the same shared review text. Updated October 2026.
A smoke alarm set is a pack of two or more smoke alarms, sometimes with a heat alarm, a carbon monoxide alarm, a remote, or a hub. You buy one to cover several rooms at once, and the right pack depends on which UK nation the home is in and whether it is rented. None of them is a mains kit, so none of them on its own meets the Welsh rental duty for mains-connected alarms. How the nation changes the pack you need is set out in the [smoke alarm set buying guide](/hub/fire-protection/smoke-alarm-set/sub/smoke-alarm-set-buying-guide). You use one when several rooms need covering at the same time. Quality, for this category, means a photoelectric smoke alarm marked to BS EN 14604, a heat alarm to BS 5446-2 if the kitchen is in scope, a sealed long-life cell when the nation demands it, and a radio link you have tested on the table before you drill.
A smoke alarm set is a pack of two or more smoke alarms, sometimes with a heat alarm, a carbon monoxide alarm, a remote, or a hub.
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Personal buying guide
Question 1 of 2
Does the home need a kitchen heat alarm in the same pack?
The AEGISLINK ASW-MR31 is three photoelectric smoke alarms and a plug-in base station at about £77.99, with 4.8 from 26 amazon.co.uk reviews. The listing limits Wi-Fi to 2.4 GHz, includes app alerts, night mode and family sharing, and describes magnetic adhesive pads that work best on a smooth surface. Most of those 26 reviews call the set solid, compact and useful when you are away from home. The battery-life line on the listing is thin. Reviews describe a replaceable CR123A, not a sealed 10-year cell, and no BS or EN number is in the captured bullets. There is no heat alarm and no CO alarm. The clearest repeated complaint is a thin retail box, which is packaging rather than a detection test, and 26 reviews are too few to read silence on failures as a long record. It is a small-sample smart smoke set for a 2.4 GHz home, not a kitchen heat kit and not a substitute for a radio smoke-and-heat pack with a named standard.
Pros
Cons
Best for: You want phone alerts on 2.4 GHz Wi-Fi and you accept a 26-review file.
Less suitable: You need a named standard, a heat alarm, or a longer review record than 26.
Specifications
Common questions
Does it work on 5 GHz Wi-Fi?
No. The listing says only 2.4 GHz Wi-Fi is supported.
What is in the pack?
The included line is three ASW-MR alarms and one base station. The bullets also mention magnetic adhesive pads.
Is a heat alarm included?
No. This is a smoke alarm set with a base station.
The X-Sense SD11-MR31 is three smoke alarms plus an SBS50 base station at about £64.59, rated 4.6 from 99 reviews. The base is in the box, with a power adapter, and reviewers say it found the heads quickly and that a test, a silence and a night mode that stops the standby LED are available in the app. The item highlight says a 10-year life and a replaceable battery, and three CR123A cells are included, so this is not a sealed-cell kit. No BS or EN number appears in the captured bullets, and there is no heat or CO head. Praise for strong magnets and a loud alarm sits beside a buyer who says a smoking flame under the alarm did nothing while the test button still worked, an app malfunction on one of three heads, and a bright blue light when the heads reconnect. Support is described as absent on a faulty head in one report. Use it when you want phone alerts for three smoke alarms and you will still fit a separate heat alarm in the kitchen.
Pros
Cons
Best for: You want app alerts for three smoke alarms and the base station is already in the box.
Less suitable: You need a named British Standard, a sealed cell, or a heat alarm for the kitchen.
Specifications
Common questions
Can you use it in a kitchen?
The listing asks the question and does not answer it with a heat-alarm claim. This kit is three smoke alarms. A smoke alarm is a poor fit in a kitchen.
Is the base station included?
Yes. The included list has one SBS50 base station, a power adapter and a cable, plus three SD11-MR alarms.
Are the batteries sealed?
The item highlight says a 10-year life and a replaceable battery, and the box includes three CR123A cells.
The Hapippofa PG-S11 is a three-pack of standalone optical smoke alarms at about £25.99, rated 4.6 from 39 reviews, and the bullet says there is no interconnection setup. Each head takes two replaceable AA cells, with a five-year cell claim and a 10-year design life, and the listing claims BS EN 14604 plus a hush button. Reviewers mention a loud test, ordinary AA cells and a low price for three. A review says the title looked like a sealed 10-year battery and the units were not, and another mentions a five-pack although this listing is a three-pack. Sticky pads fell off within one to three days, including every pad in one home. The seller’s line suggests kitchens, and an optical alarm in a kitchen is the pattern fire services tell you to avoid. Thirty-nine reviews are a short file for a 4.6. It is a basic AA three-pack if you will screw the bases and you do not need the heads to call each other.
Pros
Cons
Best for: You want three separate AA smoke alarms and you will screw them rather than use the pads.
Less suitable: You need a sealed cell, a radio link, or a smoke alarm that belongs in a kitchen.
Specifications
Common questions
Can it detect carbon monoxide?
The listing does not say it detects carbon monoxide. It is an optical smoke alarm.
Does it interlink?
No. The bullet calls it a standalone unit with no interconnection setup.
Is the battery sealed for 10 years?
No. It uses two replaceable AA cells, with a 5-year cell claim and a 10-year design life. A review says the title looked like a sealed cell.
The ELRO FS1801-10 is ten photoelectric smoke detectors at about £53.88, rated 4.5 from 7,228 amazon.co.uk reviews, which is the largest review file in this set. The listing does not claim a wireless link, a heat alarm or a CO alarm. The bullet says a replaceable cell lasting one year, with those batteries in the box, while the title talks about a 10-year sensor and EN 14604, so the decade is not a sealed cell. Reviewers call them compact and loud, and they mention straightforward screw fitting, though one person expected magnets and did not get them. The file also includes false alarms after a battery change, units binned within months, and many texts that describe a four-pack rather than this ten-piece ASIN. A 2-year guarantee is stated. Buy it when you want a lot of separate optical heads for an English owner-occupied house and you will change the cells yearly, and leave it when the home needs interlink or a sealed cell.
Pros
Cons
Best for: You want many separate smoke alarms for an English home and you will replace the cells each year.
Less suitable: You need a sealed cell, a radio link, or a heat alarm for the kitchen.
Specifications
Common questions
Are these interlinked?
The listing does not claim a wireless link. They are ten separate smoke detectors.
Is the battery sealed for 10 years?
No. The bullet says the battery is replaceable and lasts 1 year, and the included line says batteries with a 1-year lifespan. The title says a 10-year sensor.
Does the set include a heat alarm?
No. The included line is 10 FS1801 smoke detectors, batteries, mounts and a manual.
LINKD’s captured pack is three LINKD201 smoke alarms and one LINKD101 heat alarm, sold pre-linked, at about £91.99 with 4.5 from 443 reviews. The listing claims a built-in tamper-proof 10-year lithium cell, photoelectric smoke, BS EN 14604, BS 5446-2 and Grade F1, plus a 5-year warranty line. There is no carbon monoxide head in the included list, even though a bullet still cites EN 50291-1, so that standard line is not a CO alarm in the box. Many reviewers describe a few minutes of fitting because the heads arrived already linked, and screws are supplied if the pads fail. Those pads are a repeated failure, sometimes within hours, and more than one buyer reports a sealed cell dead at about 18 months. A heat head failed for one reviewer, a smoke head stopped after six months, and one person found them quieter than expected. Use it when you want a radio smoke-and-heat set with those standard numbers printed, and buy a separate sealed CO alarm if a flue or a fixed combustion appliance needs one.
Pros
Cons
Best for: You want a pre-linked smoke and heat pack with BS 5446-2 named, and you will screw the bases.
Less suitable: You need a CO alarm in the same box, or you plan to rely on the adhesive pads.
Specifications
Common questions
Does it include a carbon monoxide alarm?
The included list is three smoke alarms and one heat alarm, plus pads and screws. A bullet still cites EN 50291-1. The box contents line does not list a CO head.
How is it powered?
The power line says a 10-year lithium ion battery, and the bullets call it built-in and tamper proof. Reviews include sealed cells that failed at about 18 months.
Will the sticky pads be enough?
Pads, screws and plugs are all supplied. Several reviews say the pads failed and the heads had to be screwed up.
The WISUALARM DHI-HY-SA20A two-pack is two standalone photoelectric smoke alarms at about £18.69, with 4.5 from 365 reviews and no interlink claim. The listing claims a sealed 10-year cell, EN 14604 and 85 dB, and a test/silence button. A bullet also says a television or air-conditioner remote can mute it, and that remote is not in the box. Reviewers who like the pair mention an easy stick or screw fit, a loud test and a low price for two heads. The included-components line says smoke alarm x1 against a title and unit count of two, so count the heads when they arrive. Sealed cells are reported dead at three months, six months and four years, which sits inside the 10-year claim, and one second unit beeped continuously until support was contacted. Adhesive failed within a week for one buyer, and nuisance alarms with no visible smoke appear in the file. It is a low-cost pair for two English halls if you will screw them and you do not need the heads to sound together.
Pros
Cons
Best for: You want two separate sealed smoke alarms for English halls and you will screw them up.
Less suitable: You need the alarms to sound together, a kitchen heat head, or a contents line that already says two.
Specifications
Common questions
Do the two alarms link to each other?
The listing does not claim wireless interlink. It is a two-pack of separate smoke alarms.
Can a remote silence them?
The bullet says a TV or air-conditioner remote can mute the alarm, and it says that remote is not included. There is a test/silence button on the unit.
Is this a heat or CO kit?
No. The model line is a 2-piece smoke alarm. Heat and CO heads are not in the included list.
The XINDUM SM11R4 bundle lists three smoke alarms, one heat alarm, one carbon monoxide alarm and one remote, at about £96.99, and the included line matches that count. The listing says the heads leave the factory pre-linked, on a sealed lithium cell claimed for 10 years in standby, with smoke to EN 14604 and the CO head to EN 50291. The amazon.co.uk line is 4.4 from 811 reviews, and that same review text is also attached to the cheaper two-smoke XINDUM ASIN, so it is one pool rather than two. Buyers who praise it mention pads or screws, a remote that makes a monthly test practical, and a factory sync that skipped pairing. The cover has no obvious button in the reviews, which clashes with the bullet that says a centre press silences the alarm for about 10 minutes, and some remotes did nothing. Sticky pads fail on Artex, and the file includes a daily beep well inside the 10-year claim with no seller reply, plus false activations after about a year. In this basket it is the top pick for a clear smoke, heat and CO radio pack with the larger stated review count, provided you treat the 811 as shared and you screw the bases.
Pros
Cons
Best for: You want three smoke heads plus heat and CO in one radio pack and will screw the brackets.
Less suitable: You need a British Standard number for the heat alarm on the listing, or a review file that is unique to this ASIN.
Specifications
Common questions
What is in the box?
The included-components line lists three smoke alarms, one heat alarm, one carbon monoxide alarm and one remote. The listing says the bundle leaves the factory pre-linked.
How do you silence it?
The bullet says one press on the centre of the cover silences the alarm for about 10 minutes. A remote is also in the pack. Reviews say the cover has no obvious button.
Are the batteries replaceable?
The listing says a sealed lithium cell for 10 years in standby. It does not describe a user-replaceable cell.
This XINDUM listing is the smaller bundle: two smoke alarms, one heat alarm, one CO alarm and one remote, at about £69.48. The included line matches that count, and the model string names SM11R4, CO12 and HD11R, the same part-number family as the about £96.99 three-smoke pack. Both ASINs show 4.4 from 811 reviews because the saved listing repeats the same review text, including a buyer who ordered three smoke heads, so you should not treat 811 as a second sample. The shared complaints are a cover with no obvious button, remotes that did nothing, pads that fail on Artex, and a beep inside the claimed standby life. What you gain at this price is one fewer smoke head, which is enough for a flat with a living room and one hall, and short if you also have an upstairs landing. It is the best value in this basket for a smoke, heat and CO radio set, on the condition that you accept the shared review file and you check that two smoke heads cover your circulation spaces.
Pros
Cons
Best for: You want smoke, heat and CO on one radio link and two smoke heads are enough for the rooms.
Less suitable: You need a third smoke head, or you want review evidence that was written about this exact pack.
Specifications
Common questions
How is this different from the other XINDUM bundle?
This listing's included line is two smoke alarms, one heat alarm, one CO alarm and one remote, at about £69.48. The other XINDUM ASIN lists three smoke alarms and costs about £96.99.
Are the 811 reviews unique to this pack?
The saved listing repeats the same review text as B0D73N1KXG, including a review that says the buyer ordered three smoke heads. Treat the two counts as one pool.
Does it include a remote?
Yes. The included-components line lists one remote controller.
The CPVAN SD01 bundle is sold as a pre-linked wireless set with smoke, heat and a carbon monoxide head, plus a handheld remote, at about £115.99 with 4.4 from 583 amazon.co.uk reviews. The colour line reads four smoke alarms, one heat alarm, one CO alarm and one remote, while the title also says a 6-pack plus two remotes and the included-components line only says smoke alarm set, so you should not treat one of those lines as the only contents. Reviewers who got a working set describe a quick power-on and use the remote to test or silence a head without a ladder. The same file includes sealed cells that chirped inside the 10-year claim, including a heat head with a fault beep and an amber light within two months, and a non-replaceable cell that could not be revived. Magnetic pads are in the box, and one buyer reports all six mounts dropping off the ceiling. Pairing took more than one attempt for some people, and the listing says this generation is not compatible with the SM11R. It carries the fullest standards line in this basket, BS EN 14604, BS 5446-2 and EN 50291-1, at the top of the price band, with a contents conflict you have to resolve before you count rooms.
Pros
Cons
Best for: You want a radio smoke, heat and CO bundle and will check the colour line against what arrives.
Less suitable: You need one undisputed piece count, or you already own SM11R heads.
Specifications
Common questions
Does this pack interlink?
The listing says the alarms are wireless and pre-linked, so one head sounding is meant to set the others off. It also says this generation is not compatible with the SM11R.
Is a heat alarm and a CO alarm in the box?
The colour line reads 4 smoke, 1 heat, 1 CO and 1 remote. The title also says 6 pack + 2 remote, and the included-components line only says smoke alarm set.
Can you change the battery?
The bullets describe a built-in tamper-proof 10-year lithium cell. Reviews include units that chirped inside that claim and could not take a new cell.
The HEIMAN HS1SA-E Plus is a three-pack of Zigbee 3.0 photoelectric smoke alarms at about £85.99, with 4.2 from 85 reviews. The listing says it works only with a compatible Zigbee hub, which is sold separately, so the box does not phone you on its own and does not claim that the three heads sound together without that hub. Reviewers who already run Home Assistant describe pairing over ZHA or Zigbee2MQTT, a very small ceiling footprint, and a temperature report as well as smoke. The included line itemises one battery, one tape and one magnet sheet, which reads like a per-alarm list rather than three of each, and one box was marked with the older HS1SA-E model number. Power is a replaceable CR123A claimed for up to five years, with a 10-year sensor life, and BS EN 14604 plus UKCA are named. Only 16 review texts were captured under the 85-review headline, and there is no heat or CO head. It suits a home that already has a Zigbee 3.0 hub and wants three small smoke alarms on that network.
Pros
Cons
Best for: You already own a Zigbee 3.0 hub and want three small smoke alarms on that network.
Less suitable: You do not have a hub, or you need a kitchen heat alarm in the same box.
Specifications
Common questions
Does it work without a Zigbee hub?
No. The listing says it works only with a compatible Zigbee 3.0 hub, sold separately.
How long does the battery last?
The bullets say a replaceable lithium cell for up to 5 years, and a sensor life of 10 years.
Is there a heat alarm in the pack?
No. This is a 3-pack of smoke alarms.
The X-Sense HS21 is two SD19-W smoke alarms and one XH02-W heat alarm at about £47.99, with Link+ radio and an explicit line that there is no app and no base station. The item highlight cites EN 14604 and BS 5446, and the heat range is printed as 54°C to 65°C for a kitchen head that is not meant to trip on cooking vapour. The bullets also say a sealed 10-year lithium cell, while the included-components line lists three CR123A batteries, so the power story on the page is two facts at once. The amazon.co.uk rating is 4.1 from 215 reviews, and the captured review text is mostly about a separate X-Sense remote, including remotes that would not pair and one reported as incompatible with an SC07. One review does say alarms bought together arrived already linked. You should not read this file as a long test of the HS21 heads themselves. At this price it is the cheaper smoke-and-heat radio option in the basket only if you settle the battery lines before you fit it where a sealed cell is required.
Pros
Cons
Best for: You want two linked smoke alarms and a kitchen heat alarm without an app, and you will resolve the battery lines first.
Less suitable: You need a settled sealed cell, a CO head, or review evidence that is actually about the HS21 heads.
Specifications
Common questions
Does it detect carbon monoxide?
No. The kit is one heat alarm and two smoke alarms. The listing does not include a CO head.
Does it need an app or a base station?
The listing says it does not include app features and does not support a base station. Linking is by the Link+ test/silence button.
Is the battery sealed?
The bullets say a sealed 10-year lithium battery. The included-components line also lists three CR123A batteries. Both lines are in the saved listing.
The WISUALARM KIT1-3S1C1H-R8 lists three smoke alarms, one heat alarm and one carbon monoxide alarm at about £75.99, sold as pre-linked, with 3.9 from 236 reviews, the lowest star score in this basket. The listing claims BS EN 14604, BS 5446-2 and EN 50291-1, an 85 dB tone, and a tamper-proof 10-year lithium cell on the smoke and heat heads. Reviewers who were satisfied describe a small house covered with those three sensor types and the option to add heads up to 24. The repeated complaint is a full alarm at night, including around 4am, with no smoke the reviewer could find. Several reviews say the CO battery can be removed, and that this failed a Scottish check. gov.scot requires a sealed battery on a battery carbon monoxide alarm. At least one delivery was not already interconnected, and silence is described as awkward. The shape of the box matches a smoke, heat and CO layout, and the CO cell and the night alarms are why the score stays below the other full kits.
Pros
Cons
Best for: You want the smoke, heat and CO shape and you will check that the CO cell is sealed before you rely on it.
Less suitable: You need a sealed CO alarm for a Scottish check, or you want a quieter night-time record than 3.9 from 236.
Specifications
Common questions
Will the CO alarm satisfy a Scottish sealed-battery check?
The smoke and heat bullets claim a tamper-proof 10-year cell. Several reviews say the CO battery can be removed, and that this failed a Scottish check. gov.scot requires a sealed battery on a battery CO alarm.
Are they pre-linked?
The listing says yes. At least one review says the heads in the box were not already interconnected.
Why is the rating 3.9?
The listing shows 3.9 from 236 reviews. A repeated theme is alarms sounding at night for no smoke the reviewer could find.
This page compares 12 smoke alarm sets from amazon.co.uk listings captured on 19 October 2026. The score runs from 0 to 100: stars out of 30, the size of the review file out of 25, set fit out of 30, and listing and price out of 15. A high star line on a short file, or on ten standalone heads, does not outrank a pack whose contents match more of the rooms. The two XINDUM ASINs share one review text, so both take the 811-review band. There is no lab test.
Set fit
30%Radio interlink with no extra hub, a heat head, a CO head, a sealed cell that the listing does not contradict, and a named EN 14604 or BS EN 14604 line score higher. A hub sold separately, a replaceable cell, a pack-count conflict, a shared review file, or a CO standard cited with no CO head in the box scores lower.
Stars
30%The amazon.co.uk star rating is mapped to 30 points. 4.8 becomes 29 and 4.4 becomes 26. Stars are one part of the score, not the rank on their own.
Review sample
25%Larger amazon.co.uk review files score higher, from under 30 reviews up to 5,000 or more. The two XINDUM listings share one file of 811 reviews, so neither receives a second sample.
Listing and price
15%Shelf price is scored against what is in the box. Smoke, heat and CO under £75 scores higher than the same shape over £100. A Zigbee 3-pack whose hub is not included scores lower than a radio smoke-and-heat pack under £55.
A smoke alarm set only helps if the heads match the rooms and the nation. This guide pulls the buying order from the public UK notes used for this comparison: tenure first, then what is in the box, then the cell, then a link you can prove. Prices below are the 19 October 2026 amazon.co.uk capture. Nothing here is a laboratory test of detection or sound.
A smoke alarm set is a pack of two or more smoke alarms. Some packs add a heat alarm, a carbon monoxide alarm, a remote, or a Wi-Fi or Zigbee hub. You use one when several rooms need covering at the same time. Quality, for this category, means a photoelectric smoke alarm marked to BS EN 14604, a heat alarm to BS 5446-2 if the kitchen is in scope, a sealed long-life cell when the nation demands it, and a radio link you have tested on the table before you drill.
Scotland wants a heat alarm in the kitchen as well as smoke in the living room and in every hall and landing, interlinked and ceiling mounted. A ten-pack of optical smoke alarms does not supply that heat head.
England’s landlord rules want a smoke alarm on each living storey. They do not require the alarms to be interlinked. A bullet that says the pack complies with English law is not a certificate, and it is not the Scottish tolerable standard.
A 10-year title can mean a replaceable 1-year or 5-year cell. The ELRO FS1801 says the cell lasts one year. The Hapippofa uses two AA cells. Pads fail on Artex and on textured ceilings in these review files. Screw the brackets.
Start with the nation, then count the heads against the rooms. Scotland’s tolerable standard applies to every home. It wants smoke in the living room, smoke in every hall and landing, and a heat alarm in the kitchen, ceiling mounted and interlinked. A smoke-only multi-pack does not cover that kitchen. England’s landlord rules want one smoke alarm on each living storey and a carbon monoxide alarm for a fixed combustion appliance other than a gas cooker.
Sealed tamper-resistant lithium is what Scotland allows a householder to fit. Replaceable AA, 9 V or CR123A cells are a different product, and a battery CO alarm in Scotland must be sealed. The XINDUM packs claim a sealed 10-year standby cell and do not list loose cells. The X-Sense HS21 says sealed 10-year lithium and also lists three CR123A batteries. The ELRO FS1801 says a replaceable cell lasting one year beside a 10-year sensor in the title. Hapippofa uses two AA cells.
Three typical situations, each with a recommendation from this comparison.
You need smoke, a kitchen heat alarm and a radio link, and you want the piece count on the included line to match the title. The XINDUM three-smoke bundle lists three smoke alarms, one heat alarm, one CO alarm and a remote at about £96.99, sold as pre-linked. The 811 reviews are shared with the cheaper XINDUM ASIN.
Two smoke heads are enough for the rooms you have. The smaller XINDUM bundle is the same family at about £69.48, with one heat alarm, one CO alarm and a remote. It is the best value here because that listing-and-price part is the highest that is not the top pick. It is not a second review sample.
You are an owner-occupier in England and you want separate smoke alarms for a hall and a landing, not a Scottish kitchen layout. The WISUALARM two-pack is about £18.69 and does not claim a radio link. Screw the brackets. A 10-year title on other packs can still mean a replaceable cell.
The XINDUM pack with three smoke alarms, one heat alarm, one CO alarm and a remote leads this set. The included line matches that count, the listing says the heads leave the factory pre-linked, and the shelf price in this capture is about £96.99. The 4.4 from 811 reviews is shared with the cheaper XINDUM ASIN, so it is one pool. The two-smoke XINDUM is the best value at about £69.48 because its listing-and-price part is the highest that is not the top pick. That is one fewer smoke head on the same review text, not a second test. None of these packs was laboratory-tested, and none of them makes a home legal on its own.
XINDUM 2-smoke bundle
Highest listing-and-price part that is not the top pick, at about £69.48, for one fewer smoke head on the same shared review text.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources for this comparison, last checked on 19 October 2026. Listing prices and ratings are the amazon.co.uk pages captured the same day.
This page contains affiliate links to amazon.co.uk with the tag pcuk26-21. If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are the UK listing lines from 19 October 2026. We did not run a lab test.
