The best Burglar alarm systems, compared.
Top pick: SimpliSafe 7-piece wireless home security system Best value: KERUI Wireless Security Burglar Door Alarm System Kit – About £29.99 with a siren, a PIR, two contacts, and 4.4 from 1,276 reviews, after the mains-lead and quiet-battery notes. Updated 20.10.2026.
You are choosing a burglar alarm system you can fit yourself, and the boxes on amazon.co.uk do not all do the same job. Some are a siren for a shed or garage. Some are a small-home kit that pings your phone. Some are a branded system that can add a monitoring plan later. A siren does not dial 999, and an app alert is not a police unique reference number. The [burglar alarm systems buying guide](/hub/burglar-protection/burglar-alarm-systems/sub/burglar-alarm-systems-buying-guide) sets out response path, siren location, sensors, power, and fees before you use the table. A burglar alarm system is a self-install kit from amazon.co.uk: a control point, at least one detector, and a siren or an app alert. If a policy or a matters, that is a different purchase.
You are choosing a burglar alarm system you can fit yourself, and the boxes on amazon.co.uk do not all do the same job. Some are a siren for a shed or garage. Some are a small-home kit that pings your phone.
42 products checked · 68 hrs invested · +24,600 readers
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Personal buying guide
Question 1 of 2
What do you need the alarm to do?
The SimpliSafe 7-piece is £194.99 and shows 4.7 from only three amazon.co.uk ratings, with two UK reviews from 2025 in the file. The box is a base, a keypad, two entry sensors, two pet-friendly motion sensors and a bell box. The specification states 105 dB and 100 feet, and the bullets offer a 60-day Pro Premium trial worth £29.99 a month. A reviewer used it without a plan. The app names the open zone when you try to arm, pet-safe mode produced no dog false alarms in one home, and the keypad is described as solid. The bell box is a slim wireless outdoor sounder, on a UK three-pin lead to micro-USB. Entry-sensor range fell to about 8–9 metres, with an intermittent open reading on a garage contact beyond that. There is no camera in this set, a reviewer notes the Wi-Fi path fails if broadband is cut, and the specification still lists 1080p.
Pros
Cons
Best for: A small home that wants a SimpliSafe bell box and can keep the contacts within about 8 metres of the base.
Less suitable: A garage contact at the far end of the house, or a buyer who reads 4.7 as a large UK sample.
Specifications
Common questions
How is the SimpliSafe 7-piece kit controlled?
The listing control method is the app, and Alexa is named. A keypad is in the box. The app shows which zone is open when you arm.
Is the bell box outdoor?
A bell box is in the box. A UK review describes it as a slim wireless outdoor sounder on a three-pin lead to micro-USB. The listing states 105 dB.
How many reviews support the 4.7 rating?
Amazon shows 4.7 from three ratings. That sample is too small to outrank kits with hundreds of reviews, and contacts dropped out beyond about 8–9 metres.
The X-Sense AS05 is a five-piece corded kit at £59.49, rated 4.5 from 137 reviews: a base, a keypad, two door sensors and one motion sensor. Reviewers fit it in a flat, workshop or garage and use the app beside the keypad, and several rename the sensors in the app. The listing names Amazon Echo. It does not name an external siren or a decibel figure, and reviewers repeat that there is no outdoor box. There is no battery backup in the notes, so a power cut also drops the Wi-Fi alerts. Only two door contacts come in the box, and extras were not obvious to buy. Motion can alarm at once rather than after a delay, which catches people who need time to leave, and some units drop offline. Adhesive was missing on the face one reviewer needed.
Pros
Cons
Best for: A flat or a single workshop where a phone alert and a keypad matter more than a bell box outside.
Less suitable: A house where neighbours need to hear an external siren, or a site with unreliable mains.
Specifications
Common questions
How is the X-Sense AS05 controlled?
The listing control method is the app, and a keypad is in the box. Amazon Echo is named as a compatible device.
Does the AS05 include an outdoor siren?
No outdoor siren is named on the listing, and reviewers repeat that there is no outdoor box. No decibel figure is stated.
What happens in a power cut?
The kit is corded, and the notes do not show a battery backup. A power cut also drops the Wi-Fi alerts.
Across 1,276 amazon.co.uk reviews, the KERUI HS-01 is a seven-piece kit at £29.99: a horn the title calls weatherproof, one PIR, two door contacts and two remotes. Reviewers often have it working in about 20 minutes, including on a shed or garage with the siren indoors and the sensors about 20 metres away. The listing states 115 dB and 250 feet, and several households say the horn wakes them, though one found the tone too thin to carry. The specification says battery powered, yet reviewer accounts still put the siren on a short mains lead. The manual is often called unclear, the arm and disarm chirp is loud, and there is no obvious armed light. A flat sensor battery fails quietly, and an isolation tab left in stops the contact until you pull it.
Pros
Cons
Best for: A shed, garage or summerhouse where you want noise on site, a remote, and a socket near the siren.
Less suitable: A house that needs an outdoor bell box, a code keypad, or a phone alert when you are away. Not a certificated Grade 2 system.
Specifications
Common questions
How is the KERUI HS-01 controlled?
The control method on the listing is a remote. A smartphone is listed as compatible. The reviews describe arming from the remote, not a code keypad.
How loud is the siren on the listing?
The listing states 115 dB. That is the manufacturer figure on amazon.co.uk, not a measurement from this comparison.
Does the siren run on batteries only?
The specification says battery powered. Reviewer accounts still put the siren on a short mains lead, so plan for a socket near the horn.
The Yale YES-ALARMKIT is a five-piece battery kit at £81.88: an external siren stated at 104 dB, two PIRs, one door contact and a keypad, rated 4.4 from 997 reviews. The title says no monitoring fee and no contract. The bullets allow up to 20 Yale HSA accessories within a stated 30 metres, with a 20-second entry and exit time. Reviewers like the lack of cable runs and the siren outside, and some fit a second independent kit because each siren does not talk to the other. The keypad flip cover failed at the hinges within minutes for one buyer, and another thought the siren quieter than alarms they already knew. Setup is called a faff even when it then works. One siren arrived faulty, and reviewers treat the siren battery pack as a part that wears out.
Pros
Cons
Best for: A small house, garage or shed that needs an outside box and a code, with no monitoring contract.
Less suitable: A large or stone building beyond the stated 30 metres, or a policy that asks for a certificated Grade 2 install.
Specifications
Common questions
How is the Yale HSA kit controlled?
A keypad is in the box. The specification also lists app control, and a smartphone is named as a compatible device. No voice assistant is stated.
How loud is the siren on the listing?
The listing states 104 dB. That is the manufacturer figure on amazon.co.uk, not a measurement from this comparison.
Is a monitoring contract included?
The title says no monitoring fee and no contract. That is a listing claim, not a police unique reference number or a Grade 2 certificate.
The X-Sense AS08 is an eight-piece corded kit at £84.99, rated 4.4 from 154 reviews: four door sensors, two motion sensors, a keypad and a base. Reviewers often finish app setup in about 30 minutes, and home mode lets them arm downstairs while people stay in. Several mention no subscription, and some add smoke or leak sensors on the same app. The listing does not state a sound level. A reviewer says no outdoor siren can be connected, and others find the indoor alarm too quiet. For one household the entry delay still fired, or was awkward to cancel at the keypad. If you already have an X-Sense smoke base, a second hub is extra clutter. Fitting is self-adhesive.
Pros
Cons
Best for: A bungalow or flat that needs several door contacts and phone alerts, and can live with an indoor sounder.
Less suitable: A street-facing house that relies on neighbours hearing an external box.
Specifications
Common questions
How is the X-Sense AS08 controlled?
The listing names app, touch, and voice control. A keypad is in the box, and Alexa is in the title.
Can you add an outdoor siren?
A reviewer says no outdoor siren can be connected. The listing does not state a sound level, and some households found the indoor alarm too quiet.
Is there a monthly fee?
The listing does not state a monitoring contract. Several reviewers mention no subscription. That is a review note, not a certificate.
Across 1,766 amazon.co.uk reviews, the Yale IA-320 is a six-piece mains kit at £199.04: a smart hub, an external live siren, two PIRs, one door sensor and a numeric keypad. The title names Alexa, Google Assistant and Philips Hue, and the specification states 200 metres, with no decibel figure. Buyers leaving a monitored contract often want this shape: an outside siren, pre-paired parts, and the app as well as the keypad. Door sensors can use sticky pads or screws. The app is the repeated complaint, with some calling it poor after months and one review dropping from 3 stars to 1 star. Part-arm did not alarm a garage while the owner stayed in. Yale RFID tags bought on advice did not work with the hub, phone support hours are short, and email was slower but did unblock the app for one buyer.
Pros
Cons
Best for: A house that wants Yale smart-home control and an outside siren, and can cope if the app needs support.
Less suitable: Anyone who needs the alarm to keep working when the app account is locked, or a certificated monitored grade.
Specifications
Common questions
How is the Yale IA-320 controlled?
The listing control method is the app. A numeric keypad is in the box. The title names Alexa, Google Assistant, and Philips Hue.
How loud is the external siren?
The listing does not state a decibel figure. It does name an external live siren in the box. Treat any loudness comment in reviews as a household impression, not a lab result.
Is a monitoring contract included?
The listing does not state a monitoring contract. Reviewers treat the app as included. That is not the same as a police unique reference number.
The CPVAN is a single indoor PIR with its own siren and a remote, listed at £24.99 and rated 4.3 from 940 amazon.co.uk reviews. The specification states 120 dB and about 8 metres of detection; a bullet also says 125 dB, and another stretches open-air communication to 100 metres. Reviewers use a chime as well as the full alarm, and one remote worked from about 20 feet. Volume is adjustable, which is why some people still call it too quiet. The exit window felt too short for one buyer, who wanted more than 3 seconds. The remote has no button guard, so a coin in a pocket can set it off, and the supplied screws are described as a weak alloy that snapped. One unit stopped sensing after about a month, and pairing two units to one remote produced odd triggers in a second shed.
Pros
Cons
Best for: A single shed, garage or room where a loud motion siren is enough and you do not need an app.
Less suitable: A front door, a hall and a back door on one system, or any job that needs a phone alert.
Specifications
Common questions
How is the CPVAN alarm controlled?
The listing control method is a remote. No app or voice assistant is stated. The remote has no button guard in the review notes.
How loud is the siren on the listing?
The specification states 120 dB. A bullet also says 125 dB. Both are manufacturer figures on amazon.co.uk, not a lab test. Volume is adjustable, and some reviewers still call it quiet.
Does it include a door contact?
No. It is one indoor PIR with a siren and a remote. Detection on the specification is about 8 metres.
The SimpliSafe 13-piece kit is £304.99, rated 4.3 from 154 reviews: a base, a keypad, a 1080p indoor camera, three entry sensors, two motion sensors, a glass-break sensor, a 105 dB wireless siren, a panic button, two key fobs and a window decal. The listing states a 100-foot range, pets up to 27 kg, and a 60-day monitoring trial worth £29.99 a month. Recorded footage needs a paid plan. Reviewers praise the finish and a fast DIY fit, and telephone support cleared a sync fault for one buyer. The camera and the base are mains powered, so the kit is not fully wireless. Sticky pads failed in the first week, with screws advised. Camera dropouts and an entry sensor that keeps reporting a fault show up even where Wi-Fi is strong. One long review says it is not a stand-alone system.
Pros
Cons
Best for: A home that wants a camera and glass-break in the same DIY kit, and will decide on a plan after the trial.
Less suitable: A socket-free outbuilding, or a budget that cannot absorb a monitoring tier if you want recorded video.
Specifications
Common questions
How is the SimpliSafe 13-piece kit controlled?
The listing control method is the app, and Alexa is named. A keypad is in the box. Recorded camera footage needs a paid plan.
How loud is the siren on the listing?
The listing states 105 dB for the wireless siren. That is the manufacturer figure on amazon.co.uk, not a measurement from this comparison. Indoor or outdoor placement is not split in the specification.
Is a monitoring contract included?
Monitoring is optional. The Amazon text states a 60-day trial worth £29.99 a month. SimpliSafe UK support also lists £12.99 and £19.99 tiers.
The XUK A107F is a 21-piece kit at £139.99: a 4.3 inch touchscreen, four PIRs, eight door contacts, a siren, three remotes, three RFID fobs and an SOS button. The title says no monthly fee, and the bullets claim Smart Life, Tuya, Alexa, Google Assistant, Wi-Fi, 4G, 120 dB and 500 metres. Amazon shows 4.2 from 19 reviews, and the saved listing only carries two UK write-ups. One buyer found the fobs easy and thought it suited a garage or shed. The other reported constant control-panel errors, had no reply from the seller, and switched the panel off. The siren lead is short, so the horn has to sit next to the panel. A backup battery is a bullet claim, not a figure we measured.
Pros
Cons
Best for: A buyer who wants a large sensor count and a touchscreen, and who will return the kit if the panel misbehaves.
Less suitable: A first alarm where you need a long review record, or a siren mounted well away from the panel.
Specifications
Common questions
How is the XUK A107F controlled?
The bullets claim app, remote, keypad, and RFID control, plus Smart Life, Tuya, Alexa, and Google Assistant. The panel is a 4.3 inch touchscreen.
How loud is the siren on the listing?
A bullet says 120 dB. That figure is not a specification line, and it is not a measurement from this comparison. The siren lead is short, so the horn sits next to the panel.
Is a monthly fee claimed?
The title says no monthly fee. Only 19 ratings are shown, and one of two UK write-ups describes panel errors and no reply from the seller.
The Swokely panel is listed at £55.99, rated 3.9 from 62 reviews, with Wi-Fi, GSM and Alexa named and 110 dB on the specification. The components line lists only a remote, while reviews mention an LCD panel, door sensors and RFID cards, and one buyer counted five window and door alarms in the box. Contacts rather than only PIRs suit a house with pets, and one review says it can call a number you choose. The disarm control has no code, so anyone at the panel can silence it, and two reviews treat that as the design. A reviewer could not find voice control or the settings code. The notes say the GSM SIM generation it expects is no longer sold, and a reviewer says Wi-Fi SMS and calls need a subscription. The panel drops offline and sends brief alerts more than once a day.
Pros
Cons
Best for: A buyer who will test dialling and the disarm control on day one, and return the panel if it will not stay online.
Less suitable: A hallway panel the whole household can reach, or anyone who needs a code before the alarm can be silenced.
Specifications
Common questions
How is the Swokely panel controlled?
The specification lists voice control, and Wi-Fi, GSM, and Alexa are named. Reviews say the disarm control has no code, so anyone at the panel can silence it.
How loud is the alarm on the listing?
The specification states 110 dB. That is the manufacturer figure on amazon.co.uk, not a measurement from this comparison.
What is actually in the box?
The components line lists only a remote. Reviews mention an LCD panel, door sensors, and RFID cards, and one buyer counted five window and door alarms. Treat the components line as incomplete.
The TOWODE Wi-Fi kit is £32.99, rated 3.9 from 25 reviews: a speaker stated at 120 dB, a power cord, one PIR, two remotes and two door sensors. Bullets say 2.4 GHz only, a phone alert in about 1–8 seconds, a magnet gap under 10 mm, and up to 30 detectors, with 250 feet on the range line. Reviewers have fitted a shed in about 20 minutes and covered two sheds, one with the PIR and one with the contacts. The arm and disarm chirp is very loud, and they could not find a mute in the app. The app is called poor even when it works. After about three months one buyer had false alarms every hour and no seller support, and another horn failed within four months. The listing also disagrees with itself about whether a siren is built in, and it files the power as battery while also listing 220 V and a power cord.
Pros
Cons
Best for: A 2.4 GHz shed or garage you can test hard inside the return window.
Less suitable: A main home alarm, a 5 GHz-only router, or anyone who needs a seller to answer after the first month.
Specifications
Common questions
How is the TOWODE kit controlled?
The listing control method is a remote. A smartphone app is claimed, on 2.4 GHz Wi-Fi only. No voice assistant is stated.
How loud is the speaker on the listing?
The listing states 120 dB. That is the manufacturer figure on amazon.co.uk, not a measurement from this comparison. The listing also disagrees about whether a siren is built in.
Is a monitoring contract stated?
No monitoring contract is stated. Phone alerts are a bullet claim, about 1–8 seconds. The review file is 3.9 from 25 reviews.
The Ring Alarm Pack M is an eight-piece bundle at £209.99: a base, a keypad, two contacts, two motion detectors, a range extender and an outdoor siren. The raw amazon.co.uk file has no customer-review star line, so this is not a scored sample, though the notes draw on UK reviews in that file. People who already use a Ring doorbell describe the app steps as straightforward, with home and away modes, and some say the outdoor siren is loud. Alexa arming is mentioned. The listing itself says a subscription is required for some in-app arming, and assisted monitoring is optional. One outdoor sounder needed a power supply that was not obvious in the box. A keypad lost its sound and needed repeated resets, so the entry reminder was missed. There is no stated decibel figure or range.
Pros
Cons
Best for: A home already on Ring devices, where you will check what the current plan still locks before you rely on the app.
Less suitable: A buyer who wants siren and app control with no account fee, or a police unique reference number.
Specifications
Common questions
How is the Ring Alarm Pack M controlled?
The listing names the Ring app and Alexa. It also says a subscription is required for some in-app arming. A keypad is in the box.
Is an outdoor siren included?
Yes. The bundle names an alarm outdoor siren, plus a base, a keypad, two contacts, two motion detectors, and a range extender. No decibel figure is stated.
Why is there no star rating here?
The amazon.co.uk saved listing has no customer-review summary line. A missing star line is not treated as zero stars, and it keeps this pack off the top pick.
Twelve amazon.co.uk kits were scored on 19 October 2026 from the listings and the review notes kept for this comparison. There is no lab test. A printed decibel figure is a listing claim, not a measurement. None of the twelve listings states EN 50131 Grade 2, PD 6662, or an NSI or SSAIB certificate. The highest score is the top pick. The best price against a long review record for a siren, a PIR, and door contacts is the best value. The four weights below sum to 100.
Amazon evidence
35%Star rating and review count on amazon.co.uk. A missing star line is no evidence. It is not treated as zero stars in the label, and that product cannot take the top pick.
Listing fit
25%An external siren the box actually names, a keypad or a code, a stated sound level, and a monitoring line you can read. A subscription that locks part of the app, and a components line that disagrees with the reviews, both cost points.
Review outcome
25%UK notes on setup time, a siren that needs a socket, an app that fails, false alarms, and seller silence. A sample of three ratings stays below kits with hundreds of reviews.
Value
15%Shelf price in GBP on 19 October 2026 against a kit that does the job the title describes. A low price does not rescue a panel that will not stay online.
A burglar alarm system on amazon.co.uk is a self-install kit: a control point, at least one detector, and a siren or an app alert. The twelve listings here were priced on 19 October 2026 from about £24.99 to about £304.99. Quality shows up as a real external siren, a code to disarm, sensors that stay paired, and an honest line about mains and broadband. None of the raw fields states EN 50131 Grade 2.
A burglar alarm system in this comparison is a self-install kit from amazon.co.uk: a control point, at least one detector, and a siren or an app alert. It is not an approved installer job, and it is not a police unique reference number. The twelve listings run from about £24.99 to about £304.99 on 19 October 2026. None of their raw fields states EN 50131 Grade 2, PD 6662, or an NSI or SSAIB certificate. If a policy or a URN matters, that is a different purchase.
On the Yale HSA and the XUK, the title means no monitoring contract is claimed. Ring still requires a subscription for some in-app arming. SimpliSafe lists plan tiers, and recorded video sits behind a plan. Read the account, not only the title.
The Yale HSA states 30 metres. The XUK bullet says 500 metres. The SimpliSafe 7-piece contacts dropped out beyond about 8–9 metres in a review. A stone wall is not the open-air figure on the listing.
A PIR watches movement and heat, not a door magnet. The CPVAN has no door contact. The SimpliSafe 13-piece states pets up to 27 kg. If the listing never allowed for a pet, do not assume the sensor will ignore one.
None of these twelve listings states EN 50131 Grade 2, PD 6662, or an NSI or SSAIB certificate. A siren and an app alert do not create a police unique reference number. If the policy names a grade, book an approved installer.
Decide whether you need noise on site, a phone alert you will answer, a monitoring centre, or a police unique reference number. A siren does not dial 999. An external box is what neighbours can hear. The Yale HSA, the Yale IA-320, the Ring Alarm Pack M, and the SimpliSafe 7-piece name an external sounder or a bell box. The X-Sense AS05 and AS08 do not: reviewers say there is no outdoor siren. The CPVAN is an indoor PIR with its own horn.
Contacts cover doors and windows. PIRs cover rooms. Glass-break appears in this set only on the SimpliSafe 13-piece. A two-contact kit is a starter unless you can add parts from the same range. The Yale HSA states up to 20 HSA accessories within 30 metres, and a second kit does not talk to the first siren. Battery kits suit a socket-free shed. Mains sirens without a stated backup go quiet in a power cut.
Three typical situations, each with a recommendation from this comparison.
You want noise outside, a keypad, and no monitoring contract in the title. The Yale HSA Essentials kit states a 104 dB external siren, two PIRs, one contact, and 4.4 from 997 reviews at about £81.88. It is not a certificated Grade 2 install.
You want a siren, a PIR, and door contacts without an app plan. The KERUI HS-01 is about £29.99 with 4.4 from 1,276 reviews. Reviewers still put the siren on a short mains lead, and a flat sensor battery fails quietly.
You care more about an app and a keypad than a bell box outside. The X-Sense AS05 is about £59.49 with 4.5 from 137 reviews, two contacts, and one motion sensor. The listing does not name an outdoor siren, and a power cut drops the Wi-Fi alerts.
The top pick is the Yale HSA Essentials five-piece kit, score 91, at about £81.88. It has an external siren stated at 104 dB, a keypad, 4.4 from 997 reviews, and no monitoring fee in the title. The best value is the KERUI HS-01, score 84, at about £29.99, with 4.4 from 1,276 reviews, a siren, a PIR, and two contacts. The siren still wants a mains lead, and a flat sensor battery fails quietly. Neither result is a certificated Grade 2 install.
KERUI Wireless Security Burglar Door Alarm System Kit
About £29.99 with a siren, a PIR, two contacts, and 4.4 from 1,276 reviews, after the mains-lead and quiet-battery notes.
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 from the research digest, checked for this page on 20 October 2026. Listing prices, stars, and review counts are amazon.co.uk figures from 19 October 2026.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
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.
