The best pool alarms, compared.
Top pick: BCONE pool safety alarm – Highest score in the set: 4.0 from 428 reviews, with an app, a home unit and swim mode claimed. A UK review reports water inside the pool unit. Best value: ESHANG floating pool alarm – Lowest-priced float with batteries and a receiver included, at £73.31. Only 7 reviews, and reviewers call the in-water sounder soft. Updated 20.10.2026.
A pool alarm is a warning, not a fence and not a lifeguard. Judge a unit by indoor loudness, a sensitivity control you retest, and a plug that suits 230 V UK mains. RoSPA still wants an adult watching and a childproof barrier with a self-locking gate. HSE does not require a domestic family pool to have an alarm. Listed decibel figures and ranges in feet are seller claims. The two colours share one 56-review line, and UK reviews of that listing report a US two-pin plug. LunaSafe prints that it is not a life-saving device, and that limit belongs on every row. On amazon.co.uk the listings split into sensors that watch the water and wristband kits that alarm when one worn transmitter gets wet. No source checked for this page requires an alarm on a private family pool. Public-pool operators still have duties under the Health and Safety at Work etc. How to choose is set out in the [pool alarm buying guide](/hub/burglar-protection/pool-alarm/sub/pool-alarm-buying-guide).
A pool alarm is a warning, not a fence and not a lifeguard. Judge a unit by indoor loudness, a sensitivity control you retest, and a plug that suits 230 V UK mains.
32 products checked · 64 hrs invested · +19,200 readers
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Personal buying guide
Question 1 of 2
What must the alarm watch?
The BCONE, Lifebuoy model BC006-Sy-M.US, is the float in this set with a home unit and an app claim, priced at £352.92 in the scrape and £368.56 on the 19 October 2026 check. amazon.co.uk shows 4.0 from 428 reviews, which is the longest rating line here. The listing says 90 dB, swim mode with automatic reactivation, Alexa, and IP68, and a review describes phone notifications with an option to alert only the phone. A UK review says water was found inside the pool unit after it was opened to remove the batteries, so the waterproof claim has a reported failure. Power is listed as two AA batteries included and also as a 3.7 V, 2000 mAh pack. The stated range is 44.72 feet, which is short beside the 100-foot and 262-foot claims on other listings here. Ignore the 44.5 g weight and the 1/2-inch collet line. They do not describe this alarm.
Pros
Cons
Best for: You want a phone alert as well as a siren, and you can accept a UK report of water in the pool unit.
Less suitable: You only need a battery float you can hear indoors, or you wanted a stated range past about 45 feet.
Specifications
Common questions
Does the BCONE send a phone alert?
The listing says control is by app and that compatible devices are a smartphone. Bullets also name Alexa. A review describes phone notifications and an option to alert only the phone.
Is the BCONE listed as waterproof?
The bullets claim IP68 and resistance to chlorine and UV. A UK review says water was found inside the pool unit after it was opened to remove the batteries.
How is the BCONE powered?
The table says battery power, two AA batteries included, and also lists a 3.7 V, 2000 mAh pack. The stated sound level is 90 dB and the stated range is 44.72 feet.
The LunaSafe LLB-64WA-01-K1 is one receiver and one transmitter at £188.53, for a child wristband or a Velcro pet-collar strap. amazon.co.uk shows 4.0 from 1 review. That review, from the UK on 17 December 2025, says a toddler fell in while the sensor was not synchronised after the base was turned on, so it did not alarm. The reviewer calls that their own miss and wants a clearer ready light. The listing claims about 100 feet, about five years on the band, and up to three days on the base, and it says this is not a life-saving device. Extra transmitters are model LLB-64WA-01-00. One review cannot show a success rate, and the only story on the page is a silence after power-on. Anyone without the paired band is outside its coverage, including a second child at the same pool.
Pros
Cons
Best for: You are covering one child or one pet who will wear the band, and you will resynchronise it every time the base is switched on.
Less suitable: You need every child at the pool covered, or a review record longer than a single report.
Specifications
Common questions
What is in the one-transmitter LunaSafe kit?
The bullets say one receiver and one transmitter, a wristband for a child, and a Velcro strap for a pet collar. Extra transmitters are model LLB-64WA-01-00.
Did the UK review say it alarmed?
The only review, from the UK on 17 December 2025, says the toddler fell in while the sensor was not synchronised after the base was turned on, so it did not alarm. The reviewer calls that their own miss and wants a clearer ready light.
Does Lunasea call this a life-saving device?
The listing bullet says it is not a life-saving device. Range is listed as 100 feet and the band battery as about five years.
The blue ZEPLIHS G0026-a1 is a floating surface alarm at £99.56, with a wireless receiver and four AA batteries included. The listing claims 110 dB, IP68, and a capacitive sensor, and the bullets say one receiver can pair with up to three floats. UK reviews of this amazon.co.uk listing say the unit arrived with a US two-pin plug, so it does not fit a BS 1363 socket without an adaptor. Range is printed as 220 feet in one place and 262 feet in the bullets, which are not the same distance. At 3.9 from 56 reviews the sample is usable, and the plug is the complaint that keeps recurring. The bullets also say not to use the float with a solid safety cover or while an automatic cleaner is running. A low-battery indicator is asked in the listing questions and is not answered there.
Pros
Cons
Best for: You want a floating alarm with a receiver and you will check the plug before you rely on a mains adaptor.
Less suitable: You need a BS 1363 plug in the box, or you run an automatic cleaner while the alarm should be armed.
Specifications
Common questions
Does this ZEPLIHS alarm use a UK plug?
The specification table does not name a plug. UK reviews of this listing say the unit arrived with a US two-pin plug, so it does not fit a BS 1363 socket without an adaptor.
What power does the blue ZEPLIHS float use?
The listing says four AA batteries are required and included, and the bullets claim up to 200 days of standby. A low-battery indicator is asked in the listing questions and not answered there.
Can one receiver cover more than one pool?
The bullets say one receiver can pair with up to three floating units. They also say not to use the float with a solid safety cover or while an automatic cleaner is running.
The red ZEPLIHS is the same model, G0026-a1, at £99.85, and it carries the same 3.9 from 56 amazon.co.uk reviews as the blue listing. That is one review line, not a second sample of 56. The technical field says 80 metres and the bullets say 262 feet. Those match within ordinary rounding, because 80 metres is about 262 feet. The blue listing is the one that prints both 220 feet and 262 feet. The red listing claims 110 dB and IP68, with four AA batteries included, and the bullets say it meets ASTM F2208 with a one-year warranty. No certificate is in the saved listing, and ASTM F2208 is a US specification, not UK law. UK reviews shared with the blue unit describe a US two-pin plug. You are paying a few pence more than the blue listing for a colour.
Pros
Cons
Best for: You prefer the red housing and you will treat the shared review line and the US plug as the limits.
Less suitable: You wanted a separate review history, or a UK plug confirmed on the listing.
Specifications
Common questions
Is the red ZEPLIHS a different alarm from the blue one?
Both listings use model G0026-a1 and the same 3.9-star line from 56 reviews. The red unit is the colour variant at £99.85, against £99.56 for the blue unit.
How far does the red listing say the receiver reaches?
The technical field says 80 metres and the bullets say 262 feet. 80 metres is about 262 feet, so those two lines match within ordinary rounding. The blue listing is the one that prints 220 feet and 262 feet.
Does the red model claim a safety standard?
The bullets say it meets ASTM F2208 and mention a one-year warranty. No certificate is included in the listing. ASTM F2208 is a US specification, not UK law.
The RoamRider is a poolside underwater sensor at £110.82, rated 3.9 from 38 amazon.co.uk reviews, with an 85 dB remote receiver. You can screw it where drilling is acceptable, or use the 3M tape on a smooth surface, which is the route reviews mention. The listing suggests pools up to 16 by 32 square feet, with the sensing tube about 3.9 inches under the surface, and a separate field says a maximum range of 16 feet. Those are not the same coverage claim. It describes a trigger for an object over 13 pounds and a yellow sleep or swim mode. Reviews include a unit that lasted one season, a unit that alarmed continuously on install with no sensitivity steps in the manual, and a unit set off by light rain. Other reviews call the receiver loud. Thirty-eight reviews is a real sample, and the early failures are part of it.
Pros
Cons
Best for: You want a fixed poolside sensor on a pool within the smaller of the two size lines, and you can tape it without drilling a liner.
Less suitable: You need a written sensitivity procedure, or your pool is clearly larger than a 16-foot span.
Specifications
Common questions
Can the RoamRider be fitted without drilling?
The bullets offer a screw mount where drilling is required, or tool-free 3M tape for smooth surfaces. Reviews mention using the tape.
What pool size does the listing give?
The title and bullets suggest a pool up to 16 by 32 square feet, with the sensing tube about 3.9 inches under the surface. The technical field separately says a maximum range of 16 feet.
What do reviews say goes wrong?
Reviews include a unit that lasted one season, a unit that alarmed continuously on install with no sensitivity steps in the manual, and a unit set off by light rain. Others call the receiver loud.
The Generalman is a red floating alarm at £86.46, rated 3.9 from 11 amazon.co.uk reviews, with 85 dB and an indoor receiver claimed in the bullets. The technical table says one 9V battery is required, the bullets say it is not included, and one review says a battery was already fitted, so you should not assume the cell is in the box. A review says the notice specifies 110 V and that the transformer has a US plug rather than a European one, while the table still says battery powered. Sensitivity is adjustable, and one review says the float sat slightly lopsided after it was set more sensitive, with a battery cover that was hard to reseal. The listed dimensions of 25 x 25 x 25 mm do not match a pool float you can see in the photos, so treat that line as catalogue noise. Eleven reviews leave both the plug story and the battery story thinly tested.
Pros
Cons
Best for: You want a mid-price float with a sensitivity control and you will buy a 9V cell if the box is empty.
Less suitable: You need the battery inclusion and the plug type to be consistent on the listing.
Specifications
Common questions
Is the 9V battery in the box?
The technical table says one 9V battery is required. The bullets say it is not included. One review says a battery was already fitted. Treat inclusion as conflicting.
Does this Generalman listing mention mains power?
The table says battery powered. A review says the notice specifies 110 V and that the transformer has a US plug rather than a European one.
Can sensitivity be changed?
The bullets and the reviews say sensitivity is adjustable. One review says the float sat slightly lopsided after it was set more sensitive, and that the battery cover was hard to reseal.
The ESHANG BS-PA-01 is a blue floating alarm at £73.31, the lowest shelf price in this set, rated 3.9 from 7 amazon.co.uk reviews. The listing claims 110 dB, 262 feet, IP68, and a capacitive sensor, and it includes four AA batteries with a push-button control and no app. Reviewers praise an easy setup and a loud indoor receiver, and they also say the sounder in the water is soft and that a fairly large disturbance is needed before it trips. One of the seven reviews only covers setup for a permit, so the field evidence is thinner than the star line looks. A review names a missing Wi-Fi phone alert as the feature they wanted. Up to 200 days of standby is a bullet, not a measurement from these reviews. At this price you are buying a receiver you may hear indoors, on a sample of seven, and you are not buying a phone notification.
Pros
Cons
Best for: You want the cheapest float here with batteries and a receiver, and you will test it from the bedroom.
Less suitable: You want a phone alert, or a review count you can lean on.
Specifications
Common questions
Does the ESHANG alarm include a phone app?
The control method is push button. Bullets describe a receiver, not an app. A review says the missing feature they wanted most was a Wi-Fi phone alert.
How is it powered?
The listing says four AA alkaline batteries are required and included, and the bullets claim up to 200 days of standby. The stated range is 262 feet and the stated sound level is 110 dB.
What do the seven reviews actually judge?
Reviewers praise an easy setup and a loud indoor receiver. They also say the sounder in the water is soft and that a fairly large disturbance is needed. One review only covers setup for a permit.
The Mystique Maison 902 is a blue floating motion sensor at £75.62, rated 3.7 from 17 amazon.co.uk reviews. The listing claims 85 dB, an indoor receiver, and four AA batteries included, and it says you set it by inserting the batteries and placing the float, with no drilling. Sensitivity is adjusted by rotating the base, which is a control several reviews say they actually used. Swim mode is claimed to pause the alarm and re-arm after the surface has been calm for 10 continuous minutes. Reviews also say it can beep at any water motion, including filter jets, and one review reports a single false alarm in extremely heavy rain. There is no IP rating on the row. Seventeen reviews is a short record beside the BCONE’s hundreds, and 3.7 is the lowest average among the floats that have a star line.
Pros
Cons
Best for: You want a lower-priced float with a sensitivity dial and a stated swim mode, and you will retest after jets are running.
Less suitable: You need a long review history, or your returns churn the surface all day.
Specifications
Common questions
Does the Mystique Maison alarm need drilling?
The bullets say you insert the batteries, set sensitivity, and place the float in the water, with no drilling and no wiring.
How does swim mode work on this listing?
The bullets say swim mode pauses the alarm and that it reactivates after the surface has been calm for 10 continuous minutes.
What do reviewers say about false alarms?
Reviews say it can beep with any water motion, including filter jets, and one review reports a single false alarm in extremely heavy rain. Others say the sensitivity dial helped.
The LunaSafe LLB-64BL-02-K3 is a worn immersion kit at £271.50, with one portable receiver and two blue transmitters, and the raw amazon.co.uk file has no customer-review line. The listing claims about 100 feet line of sight, about five years on the wristband battery, and up to three days on the base from one charge. It says the product is not a life-saving device, which is the right limit to keep in view, because the bands watch only the people or the pet wearing a paired transmitter. Extra child and pet transmitters are separate models, LLB-64WA-02-BU and LLB-64PW-02-RE. Import charges are part of what a UK shopper sees on this listing. With no review text there is no evidence here about sync, false alarms, or whether 100 feet survives a wall. You would be paying the higher wristband price for a second band and an unreviewed page.
Pros
Cons
Best for: You need two worn transmitters and you accept a listing with no amazon.co.uk reviews.
Less suitable: You want the pool itself watched, or a star line you can compare.
Specifications
Common questions
Who does this LunaSafe kit watch?
It includes two transmitters worn by a child or, with the separate pet model, a pet. It does not watch the pool itself. Anyone without a paired band is not covered.
What runtime does the listing claim?
The bullets say the wristband battery lasts about five years and the base runs up to three days on one charge. Wireless range is given as 100 feet line of sight.
Are there customer reviews on the listing?
The saved listing has no customer-review line and no review text. Star rating and review count are therefore not available from this scrape.
Nine amazon.co.uk listings were scored for this page. Weights sum to 100. A listed decibel figure, a range in feet, or an ASTM F2208 line is not treated as a measured result. There was no lab test. The BCONE price used for value is £352.92 from the scrape, with £368.56 noted from the 19 October 2026 check. The two ZEPLIHS colours share one 56-review line, so the red listing is not a second sample.
Amazon evidence
35%Star rating on amazon.co.uk, with a hard deduction when the count is under about 30, under 10, or when the saved listing has no out-of-five line. A missing star line scores as no evidence.
Listing fit
30%A receiver or home unit you can place indoors, a stated sensitivity or swim control, and batteries the listing says are included. A US two-pin plug in UK reviews, a battery line that contradicts itself, or two coverage figures that disagree, deducts. A wristband scores for stating that it is not a life-saving device, and it does not score as a pool sensor.
Review outcome
20%UK review notes about plugs, jets, rain, water inside a housing, a siren that will not stop, and a wristband that stayed silent after a missed sync. Thin files stay low on this part.
Value
15%Shelf price in GBP against a float or a band the listing actually describes. The lowest complete float, with batteries included, scores highest here. A low price does not erase a seven-review limit.
The checks run in this order: type, indoor sound, false alarms, the UK plug, coverage, then price. The table is the nine listings. The notes below are the limits that apply to all of them. None of these alarms was measured in a lab for this page. A decibel figure, a range in feet and an ASTM line stay seller claims. A pool alarm does not replace supervision or a barrier.
A pool alarm for a UK shopper is a warning device. It is not a fence and it is not a lifeguard. On amazon.co.uk the listings in this comparison split into sensors that watch the water and wristband kits that alarm when one worn transmitter gets wet. No source checked for this page requires an alarm on a private family pool. Public-pool operators still have duties under the Health and Safety at Work etc. Act 1974.
A door magnet and a leak probe are different products. They do not watch a pool. A leak probe belongs with a water alarm for a pipe or a floor, not in this table.
Listed figures of 85, 90 or 110 dB are seller claims. ESHANG reviewers say the in-water sounder is soft and the indoor receiver is the loud part. Test the receiver in the rooms where you actually are.
Swim mode pauses the alarm. A wristband covers only a paired wearer, and the one UK LunaSafe review reports silence after a missed sync. Resynchronise after the base is switched on, and do not treat either product as a lifeguard.
A floating or poolside sensor watches the pool. A wristband watches only the person, or the pet, wearing a paired transmitter. A door magnet is a different product. A leak probe is a different product too, and it belongs with a [water leak alarm](/hub/burglar-protection/water-leak-alarm), not in this table. Parents who are often indoors need a water sensor and a receiver they have tested in the house, plus a fence plan. The second check is sound you can hear indoors.
Wind, heavy rain, return jets and a spa spillover appear in reviews. Mystique Maison reviews say it can beep at any water motion, including filter jets, and one review reports a single false alarm in extremely heavy rain. RoamRider reviews include a unit set off by light rain and a unit that alarmed continuously on install with no sensitivity steps in the manual. Turn sensitivity down only if you test again afterwards. Swim mode pauses the alarm.
Three typical situations, each with a recommendation from this comparison.
You need the water watched and a receiver you will test in the kitchen and the bedroom, plus a fence plan. The BCONE is the top pick in this set because of the 428-review line, the claimed app and the home unit. A UK review reports water inside the pool unit.
You will fit and synchronise a worn transmitter, and you accept that everyone else at the pool is not covered. The one-transmitter LunaSafe is the wristband with a UK review. That review says it did not alarm after a missed sync. The listing says it is not a life-saving device.
You want batteries in the box and a receiver, at the lowest shelf price in this set. The ESHANG is £73.31 with four AA cells included. The review count is 7, and reviewers call the in-water sounder soft. There is no phone app.
The top pick is the BCONE pool safety alarm, at £352.92 in the scrape, with 4.0 from 428 reviews and a claimed app and home unit. A UK review reports water inside the pool unit, and the stated range is 44.72 feet. The best value is the ESHANG BS-PA-01 at £73.31, with four AA batteries included and 3.9 from only 7 reviews. A 3.9 from seven does not become the top pick because it is the cheapest. A wristband watches a wearer, not the pool.
BCONE pool safety alarm
Highest score in the set: 4.0 from 428 reviews, with an app, a home unit and swim mode claimed. A UK review reports water inside the pool unit.
ESHANG floating pool alarm
Lowest-priced float with batteries and a receiver included, at £73.31. Only 7 reviews, and reviewers call the in-water sounder soft.
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.
Sources taken from the research digest. Listings were 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 small commission, at no extra cost to you. Prices, stars and review counts come from stored amazon.co.uk listings. We did not run a lab test.
