The best Pocket alarms, compared.
Top pick: Mosaic Alarm PA98CH – Highest score, 96, from 4.8 stars, a 135 dB pull-pin siren, a torch, and a strobe. Best value: Hion JBQ-Pink-2 – Lowest shelf price, about £6.78, against a score of 92 with a torch and an IP44 claim. Updated 20.10.2026.
A pocket alarm is a small siren you carry on keys, a bag, a belt, or in your hand so you can make a continuous noise and startle someone. In the UK it is the personal safety product police advice points to. It is not a home burglar alarm, and it is not an NHS telecare pendant. You judge one by whether you can set it off with one hand, whether the sound is a continuous siren, and whether you will keep the battery ready. Suzy Lamplugh Trust asks for a continuous sound over 130 decibels, with about 138 dB described as ideal. The job is to distract you into leaving. It does not guarantee that strangers will come. None shows Secured by Design or Sold Secure. One-hand use, loudness, and power are set out in the [pocket alarm buying guide](/hub/burglar-protection/pocket-alarm/sub/pocket-alarm-buying-guide). A lone-worker fob that calls a control room is a service, not one of these twelve listings.
A pocket alarm is a small siren you carry on keys, a bag, a belt, or in your hand so you can make a continuous noise and startle someone. In the UK it is the personal safety product police advice points to.
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Personal buying guide
Question 1 of 2
What will you use it for?
The Mosaic Alarm PA98CH is a 22.6 g pull-pin siren at £19.99, listed at 135 dB with a strobe, a side-button torch, and a USB-C rechargeable cell. It has the highest stars in this set, 4.8 from 607 reviews, which is a much smaller sample than Vantamo’s 6,761. Early reviews call it extremely loud, useful as a torch as well as a strobe, and easy to clip to a coat zip, a bag, or a belt. The listing claims about 60 minutes of sound, up to about 100 minutes of torch light, and a two-year standby after a full charge, with a low-battery LED. Reviewers say the pin is stiff to pull at first and fiddly to push back in. The cable is included and the wall charger is not, and there is no IP rating, so you still charge it and free the pin before you rely on it.
Pros
Cons
Best for: One light rechargeable siren with a torch, if you will loosen the pin at home and you can live with a smaller review count.
Less suitable: A gift multi-pack, or a buyer who wants several thousand reviews before they trust the stars.
Specifications
Common questions
How does the Mosaic Alarm PA98CH switch on?
The feature text describes a pull pin. Reviewers say the pin is stiff to pull at first and fiddly to push back in, so loosen it at home before you rely on it.
How loud is the PA98CH on the specification line?
The specification line is 135 decibels. That figure is the seller’s claim. This comparison did not measure it, and the page does not name a Sold Secure test.
Does the PA98CH listing claim water resistance?
No IP rating is given. The box line includes a USB-C cable and not a wall charger, and a low-battery LED is claimed.
The Vantamo ALARM01 is a single 50 g keychain at £17.99, listed at 130 dB with a touch control, a lithium-polymer cell, a strobe, and a low-battery notice. It is rank 1 in Sirens on amazon.co.uk. Across 6,761 reviews at 4.6 stars, early comments call it very loud, describe the strobe as blinding, and treat USB-C charging as part of owning it. The box line includes a charging cable, a keychain, and a keyring, and the body is about 25 by 17 by 97 millimetres. At least one review says a unit did not work, and reviews warn that a test close to the ear is painful. There is no water-resistance code on the specification table. The Sirens rank is a sales position. Nothing on the listing names a Sold Secure test.
Pros
Cons
Best for: A single rechargeable alarm with a large review count, if you will charge it and you do not need an accreditation mark on the listing.
Less suitable: A students’ union or employer order that needs Sold Secure SS502 named on the product page.
Specifications
Common questions
How does the Vantamo ALARM01 switch on?
The comparison line is touch. Early reviews treat USB-C charging as part of owning it, and they warn that a test close to the ear is painful.
How loud is the Vantamo on the specification line?
The specification line is 130 decibels, with a strobe. Early comments call it very loud and describe the strobe as blinding. The figure was not measured for this comparison.
Does rank 1 in Sirens mean it is police-tested?
No. Rank 1 in Sirens is a sales position. Nothing on the listing names a Sold Secure test, and there is no water-resistance code on the specification table.
The SUNMAY 49 is a five-pack of pull-pin keychain sirens, listed at 140 dB with three LR44 cells and a small torch, at £15.99 on amazon.co.uk. Across 3,933 reviews at 4.6 stars, the first 50 often call the sound very loud and the pin simple, and many buyers say they bought the set as gifts. The listing warns you not to test it near your ears or in a small room. Several of those early reviews say a unit broke, and at least one says a unit did not work, so a five-pack is not five working alarms until you try each one. The specification has no water-resistance rating and no low-battery warning. The listing weight is 190 g, heavier than the single clip-on models in this set.
Pros
Cons
Best for: A gift when you want several pull-pin alarms in different colours and you will test each one before you hand it over.
Less suitable: One person who wants a single light clip-on they can recharge, or anyone who needs a stated water rating.
Specifications
Common questions
How does the SUNMAY 49 switch on?
Feature text describes a pull pin. Pin out starts the sound and pin in stops it. The listing warns you not to test it near your ears or in a small room.
How loud is the SUNMAY on the specification line?
The specification line is 140 decibels, with a small torch. That is the seller’s claim. Early reviews often call the sound very loud, and some say a unit broke or did not work.
Does the SUNMAY listing claim water resistance?
No water-resistance rating and no low-battery warning are given. The pack is five units on LR44 cells, and the listing weight is 190 g.
The Hion JBQ-Pink-2 is a rechargeable 130 dB keychain at £6.78, the lowest shelf price in this set, listed at 40 g with a pull pin, a double-press SOS button, a torch, and an IP44 claim. It shows 4.6 stars from 1,555 reviews, matching the black listing rather than a separate pile of pink-only reviews. Early reviews call it loud for the size on early runs and dark nights, light enough for a keyring, and useful for the torch and the SOS button, including a purchase for a teenage daughter. One reviewer was unsure how to switch it off, and another doubted the outdoor range. A minority say it is not as loud as they hoped. The pink page lists 7.6 by 4.3 by 2 centimetres, which does not match the millimetre line on the black page, so treat the size as approximate until it is in your hand.
Pros
Cons
Best for: A first rechargeable alarm when £6.78 matters and you will charge it and learn the off switch.
Less suitable: A buyer who wants a large independent review count, or a listing whose size and power lines agree with the other colour.
Specifications
Common questions
How does the Hion JBQ-Pink-2 switch on?
Feature text describes a pull pin and an SOS button, with a double-press noted in the bullet. One reviewer was unsure how to switch the sound off, so learn that before you need it.
How loud is the pink Hion on the specification line?
The specification line is 130 decibels. That is the seller’s figure, not a measurement made for this comparison. A minority of early reviews say it is not as loud as they hoped.
Does the pink Hion claim water resistance?
IP44 is claimed in the listing bullet. The 1,555 reviews match the black Hion page, and the centimetre size on this page does not match the black millimetre line.
The Hion JBQ-Black-2 is a 40 g rechargeable keychain at £8.98, listed at 130 dB, with a pull pin, a double-press SOS button, a torch, and an IP44 claim in the bullet. The amazon.co.uk page shows 4.6 stars from 1,555 reviews, the same count as the pink Hion listing. Early reviews mention runs, the gym, and walking alone, and they note the torch and the SOS control. One reviewer could not see how to turn the sound off, and others doubted how far it carries outdoors. The specification power source says Corded Electric while the battery line says lithium-ion, so the listing contradicts itself. A bullet claims about 90 minutes of alarm after roughly an hour of charging, and a range of 150 metres.
Pros
Cons
Best for: A black rechargeable alarm for walks and runs, if you learn the off switch before you need it.
Less suitable: Anyone who needs the listing to agree on how the battery is powered, or a review count that is clearly for this colour alone.
Specifications
Common questions
How does the black Hion switch on?
Feature text describes a pull pin and an SOS button. Early reviews mention the torch and the SOS control, and one reviewer could not see how to turn the sound off.
How loud is the black Hion on the specification line?
The specification line is 130 decibels. A bullet claims a range of 150 metres. Reviewers doubted how far it carries outdoors, and this page did not measure either figure.
Why does the power line disagree with the battery line?
The power source says Corded Electric while the battery line says lithium-ion. Treat that clash as a listing error and confirm the charger in the box before you rely on it. IP44 is claimed in the bullet.
The Powbee Alarm-003 is a three-pack of pull-pin keychain alarms at £12.86, with 140 dB on the specification line and 150 dB in a listing bullet. It is the most reviewed model here, at 4.5 stars from 9,149 amazon.co.uk reviews, and the early reviews often praise a bright light and a body small enough for a keyring, a wrist, or a pocket. Buyers mention it as a gift for a daughter, a granddaughter, or a student leaving for university. Those same reviews include a pin that one person needed both hands to pull, and batteries that were already flat when the sound was needed. A listing claim of about 60 minutes of continuous alarm sits next to doubt that the volume stays that high. The specification range is 100 metres, while a bullet says 225 metres, and there is no water rating in the table.
Pros
Cons
Best for: A household that wants three pull-pin alarms on keyrings and will fit fresh LR44 cells before anyone relies on them.
Less suitable: Someone who needs one-handed activation every time, or a rechargeable cell with a low-battery warning.
Specifications
Common questions
How does the Powbee Alarm-003 switch on?
Feature text describes a pull pin. One early review says the pin needed both hands. If you cannot rehearse a one-handed pull, do not rely on it.
Why do the Powbee loudness lines disagree?
The specification line is 140 decibels and a bullet says 150 decibels. The range line is 100 metres and a bullet says 225 metres. Neither clash was measured here.
Does the Powbee listing claim water resistance?
No water rating is in the table, and no low-battery warning is stated. Early reviews include batteries that were already flat when the sound was needed. The cells are replaceable LR44s.
The Original Defense SDS in magenta is a single 40 g clip-on at £14.99, listed at 130 dB with a touch control, an LED strobe, and a carabiner. The page shows 4.5 stars from 5,491 reviews, the same count as the mint and black colour pages, so that figure is a shared listing total rather than 5,491 reviews of magenta alone. Early reviews describe it as loud, small, and easy to clip to a bag or a dog lead, with a bright light for dark walks. A listing bullet claims water resistance and a 365-day battery, but the specification table has no IP code. Reviews include units that broke when handled roughly, a dead battery, and a minority who found it quieter than they expected. This colour page states a range of 305 metres.
Pros
Cons
Best for: A single light alarm to clip to keys or a dog lead, if you accept a shared review count and no IP code.
Less suitable: A buyer who wants a separate review base for this colour, or a stated IP rating for rain.
Specifications
Common questions
How does the magenta Original Defense switch on?
The comparison line is touch, with an LED strobe and a carabiner. Early reviews describe it as small and easy to clip to a bag or a dog lead.
How loud is the magenta page on the specification line?
The specification line is 130 decibels, and this colour page states a range of 305 metres. Both are seller claims. A minority of reviews found it quieter than expected.
Are the 5,491 reviews only for magenta?
No. The same 4.5-star, 5,491-review count appears on the mint and black pages. Water resistance is claimed with no IP code in the specification table.
The mint Original Defense SDS is the same model name at £17.99, listed at 130 dB and 41 g, with 4.5 volts and a range written as 1,000 feet rather than the 305 metres on the magenta page. It carries the same 4.5-star, 5,491-review count as the other Original Defense colours. Early reviews again mention dog walks in low light, a small body, and a bright light that is easy to reach. The listing still claims water resistance without an IP code in the table. Rough handling and a dead battery appear in the early reviews, and a minority say it is not as loud as they hoped. You pay £3 more than the magenta listing for a colour and a lithium-ion line in the battery field, not for a separate set of reviews.
Pros
Cons
Best for: Someone who wants this mint colour and will treat the shared 5,491 reviews as a family total.
Less suitable: A buyer comparing price, because the magenta page lists the same 130 dB at £14.99.
Specifications
Common questions
How does the mint Original Defense switch on?
The comparison line is touch, with an LED strobe. Early reviews mention dog walks in low light and a bright light that is easy to reach.
How loud is the mint page on the specification line?
The specification line is 130 decibels. The range is written as 1,000 feet, not the 305 metres on the magenta page. A minority say it is not as loud as they hoped.
Why is mint £3 more than magenta?
The shelf price is £17.99 against £14.99 for magenta, with the same 5,491-review count. You are paying for the colour and a lithium-ion line, not a separate review file. No IP code is in the table.
The black Original Defense SDS is listed at 125 dB, not the 130 dB on the magenta and mint pages, and it costs £17.99 for a single 40 g unit with a push-button control and an LED strobe. It shares the 4.5-star, 5,491-review count with those other colours. Early reviews still describe a siren loud enough for a bag, a belt, or a dog lead, plus a bright light on dark walks. A listing bullet claims water resistance and a 365-day battery, without an IP code in the specification table. Reviews include a unit that broke when handled roughly, a dead battery in a multi-unit order, and a minority who found it quieter than expected. On the specification line this is the quietest Original Defense colour here, at the same price as the mint page.
Pros
Cons
Best for: Someone who specifically wants the black Original Defense colour and has compared the 125 dB line with the 130 dB colours.
Less suitable: A buyer chasing the higher decibel line, because magenta lists 130 dB at £14.99.
Specifications
Common questions
How does the black Original Defense switch on?
The specification line is a push button, with an LED strobe, a carabiner, and a clip. Early reviews mention bags, belts, and dog leads in the dark.
How loud is the black page on the specification line?
The specification line is 125 decibels, below the 130 dB on the magenta and mint pages. It is the quietest Original Defense colour in this set, at the same £17.99 as mint.
Does the black page have its own reviews?
It shares the 4.5-star, 5,491-review count with the other colours. A bullet claims water resistance and a 365-day battery, without an IP code in the specification table.
The Fauxomor three-pack is £11.99 for pink, blue, and black pull-pin alarms listed at 140 dB, with a strobe, a lanyard, and a claimed low-battery warning of three beeps when the cell drops below 10 percent. It sits at 4.5 stars from 2,524 reviews. Early reviews say the sound is easy to start and hard to set off by accident, and some say it gets louder after the first second. People clip them to bags and dog leads. Several of those reviews say it is not as loud as the title led them to expect, and at least one calls the build cheap. One buyer ordered three colours and received two. The listing claims about 60 minutes of continuous use and up to three years of battery life, and it states neither a water rating nor dimensions in centimetres.
Pros
Cons
Best for: A three-colour gift pack when you want a low-battery beep and you will listen to each unit before you give it away.
Less suitable: Someone who needs a stated size, a water rating, or a siren reviewers consistently call as loud as 140 dB.
Specifications
Common questions
How does the Fauxomor 3-pack switch on?
Feature text describes a pull pin. Early reviews say the sound is easy to start and hard to set off by accident, and some say it gets louder after the first second.
How loud is the Fauxomor on the specification line?
The specification line is 140 decibels. Several early reviews say it is quieter than the title suggested. The number is the seller’s claim, not a measured result.
Does the Fauxomor listing warn you about a flat cell?
A low-battery warning of three beeps is claimed when the cell drops below 10 percent. No dimensions and no water rating are on the specification, and one buyer received two colours instead of three.
The TECKNET AF-2006 is a single rechargeable clip-on at £8.98, listed at 130 dB and 50 g, about 10 by 3.5 by 3 centimetres, with a torch the bullet rates at 300 lumens and an IPX4 claim in the title. It has 4.4 stars from 938 reviews, a thinner base than the big keychain packs. Early reviews praise the torch more often than the siren, and they mention clipping it to a bag, a belt, or a dog lead. Activation on the listing is a double-click, and a low-battery warning is three short beeps plus a white flash. Charging comes up as normal use in those reviews, so a flat cell is the failure you plan for. Rain is mentioned a few times. IPX4 is a splash claim, not a claim that you can soak the unit, and the siren rank on the page is 26.
Pros
Cons
Best for: Night runs and dog walks when the torch matters as much as the siren and you will charge it.
Less suitable: Someone who wants a simple pull-pin they can start without remembering a double-click.
Specifications
Common questions
How does the TECKNET AF-2006 switch on?
The comparison line is a push button, and the assessment of the listing notes a double-click. Early reviews praise the torch and the clip more often than the siren.
How loud is the TECKNET on the specification line?
The specification line is 130 decibels. A bullet rates the torch at 300 lumens. The siren rank on the page is 26, and 938 reviews is a thinner base than the large keychain packs.
What does the IPX4 claim cover?
IPX4 is in the title and is a splash claim, not a claim that you can soak the unit. A low-battery warning of three short beeps plus a white flash is also claimed. You still have to charge it.
The Mosaic Alarm PA68LED is a 19.8 g pull-pin siren at £9.99, listed at 130 dB with a strobe and two built-in cells the bullet says you cannot replace. Across 2,137 reviews at 4.3 stars, the lowest star rating in this set, early comments praise an easy clip to a bag or keys and mention students, including one heading to a university in Bristol. A listing bullet claims up to five years of standby and about 30 minutes of sound once the pin is out. One reviewer found the siren not loud enough, another said the light popped out of its socket, and an October 2026 review says a unit arrived not working. The battery count on the specification line says two C cells, which conflicts with the button-cell description, so do not plan on swapping the cells yourself.
Pros
Cons
Best for: A very light clip-on you can leave on a bag, if you test it on arrival and accept that the cells are sealed.
Less suitable: Anyone who wants to change the batteries, or who needs the higher star ratings elsewhere in this set.
Specifications
Common questions
How does the Mosaic Alarm PA68LED switch on?
Feature text describes a pull pin, with a strobe. A bullet claims about 30 minutes of sound once the pin is out, and up to five years of standby.
Can you replace the PA68LED batteries?
The bullet says the two CR2032 cells are not user-replaceable. The specification battery line says two C cells, which conflicts with that description, so do not plan on swapping them.
Does the PA68LED listing claim water resistance?
No water rating is given. It is the lightest unit here at 19.8 g and £9.99, with 4.3 from 2,137 reviews, the lowest star line in the set. Test it on arrival.
Twelve amazon.co.uk listings were scored from the pages checked on 19 October 2026. There is no laboratory measurement of decibels. Stars, review volume, feature lines, early-review complaints, and shelf price are the inputs. Shared review counts on the Original Defense colours, and on the two Hion colours, are not treated as separate evidence. A specification line that clashes with a bullet is a deduction. A thin review sample caps how far stars can lift a score. The four weights below sum to 100.
Amazon stars and review volume
40%Maximum 40. The star line and the number of amazon.co.uk reviews. A shared count across colour pages is one body of evidence, not three. A small sample cannot lift a score as far as several thousand reviews.
Features that change use
25%Maximum 25. One-hand control, a torch or strobe, a power plan you can name, a low-battery cue, and a stated water code. Marketing words without a code do not score as a rating.
Review sentiment
20%Maximum 20. Themes in the early reviews, including breakage and units that arrived dead. Flat batteries and a pin that needs two hands count here.
Price against that result
15%Maximum 15. The shelf price on 19 October 2026 set against the score from the other three blocks. The lowest price is not an award on its own.
A pocket alarm only helps if you can start it with one hand, if the sound is a continuous siren, and if the battery will be ready when you need it. The twelve amazon.co.uk listings below were scored on stars, review volume, those features, early-review complaints, and price. Decibel figures are seller claims. None of these pages is treated as Sold Secure SS502.
A pocket alarm is a small siren you carry so you can make a continuous loud noise, startle someone, and move towards other people. You might keep it on keys, on a bag strap, on a belt, or in your hand. Police advice in the UK points to this kind of personal safety product. It is not a home burglar alarm, and it is not the monitored telecare pendant the NHS describes. A lone-worker fob that calls a control room is a service, not one of these twelve listings.
Police approved on a title is not Secured by Design. Police Preferred Specification for this family is Sold Secure SS502 or SS502:2024. None of these twelve pages shows that certificate. A Sirens sales rank is not a substitute.
West Yorkshire Police and Suzy Lamplugh Trust both say to carry a personal attack alarm in your hand if you feel at risk. A unit you cannot reach is not the product you bought. Fitting the keyring onto the activation pin is a related mistake.
Powbee lists 140 dB on the specification line and 150 dB in a bullet, and the range lines disagree too. The black Original Defense page lists 125 dB while magenta and mint list 130 dB. Use the specification line, and do not treat either number as a lab result.
One hand is the first buying test, because the alarm is useless if you cannot start it while your other hand is full. A pull pin or a button you can hit are the patterns in this set. A Powbee reviewer said the pin needed both hands, so rehearse it. Mosaic Alarm PA98CH reviewers say the pin is stiff at first and fiddly to reseat. Hion lists a pull pin and a double-press SOS button. TECKNET lists a push button. Original Defense magenta and mint list touch, and the black page lists a push button.
Flat batteries are a repeated review complaint, so the power plan is part of the purchase. SUNMAY and Powbee use replaceable LR44 cells. Fauxomor, TECKNET, Vantamo, and the Mosaic Alarm PA98CH claim a low-battery warning. Hion, TECKNET, Vantamo, and the PA98CH are USB packs you have to charge. The Mosaic Alarm PA68LED bullet describes two sealed CR2032 cells and up to five years of standby, while the specification line says two C cells. Do not plan on swapping those cells.
Three typical situations, each with a recommendation from this comparison.
You will carry one light siren, charge it, and loosen the pin at home. The Mosaic Alarm PA98CH lists 135 dB, a torch, a strobe, and a USB-C cell at 22.6 g. The star line is 4.8 from 607 reviews, a smaller sample than Vantamo or Powbee.
You want several pull-pin alarms in different colours, and you will sound each one before you hand it over. The SUNMAY 49 is five units at about £15.99, listed at 140 dB, with 4.6 from 3,933 reviews. Early reviews include units that broke.
You will charge it and learn the off switch. The Hion JBQ-Pink-2 is about £6.78, listed at 130 dB with a torch, a pull pin, a double-press SOS button, and an IP44 claim. The 1,555 reviews match the black Hion page.
The top pick is the Mosaic Alarm PA98CH, score 96, at about £19.99. It has the highest stars in this set, 4.8 from 607 reviews, with a 135 dB pull-pin siren, a torch, a strobe, and a USB-C cell at 22.6 g. That review count is smaller than Vantamo or Powbee, and reviewers call the pin stiff. The best value is the Hion JBQ-Pink-2, score 92, at about £6.78, the lowest shelf price, with a rechargeable cell, a torch, and an IP44 claim. The 1,555 reviews match the black Hion page. Neither badge is a laboratory measurement of decibels.
Mosaic Alarm PA98CH
Highest score, 96, from 4.8 stars, a 135 dB pull-pin siren, a torch, and a strobe.
Hion JBQ-Pink-2
Lowest shelf price, about £6.78, against a score of 92 with a torch and an IP44 claim.
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 and amazon.co.uk listings, last checked on 19.10.2026.
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 article contains affiliate links. If you buy through these links we may earn a commission at no extra cost to you. Scores use amazon.co.uk listings and review evidence. A commission does not change them.
