Glass break detector buying guide
Updated: 20.10.2026
You have searched for a glass break detector and amazon.co.uk has put a stick-on siren, a hub sensor, and products that are not detectors in the same list. A manual call point and a car escape hammer do not listen for a burglar. This glass break detector buying guide is the order to use before the five listings on the [glass break detector comparison](/hub/burglar-protection/glass-break-detector). You should know whether you want a local shout on the pane, a listener in one room, or a graded system. Those listings run from £8.10 to £34.99. A qualifying purchase can earn a commission at no extra cost to you.
You have searched for a glass break detector and amazon.co.uk has put a stick-on siren, a hub sensor, and products that are not detectors in the same list.
You have searched for a glass break detector and amazon.co.uk has put a stick-on siren, a hub sensor, and products that are not detectors in the same list. A manual call point and a car escape hammer do not listen for a burglar. This glass break detector buying guide is the order to use before the five listings on the glass break detector comparison. You should know whether you want a local shout on the pane, a listener in one room, or a graded system. Those listings run from £8.10 to £34.99. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Detection | What the alert does | Power | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  SimpliSafe SimpliSafe Glassbreak Sensor | Acoustic | Through the system | 1 CR123A included | 7.8 | about £34.99 | View offer |
| Alternative |  Goerpn Goerpn 2-pack window alarm | Vibration | 30-second local siren | Count not stated | 6.1 | about £14.95 | View offer |
| Best value |  Flintronic Flintronic 4-pack window alarm | Vibration | 30-second local siren | 3 LR44 included | 7.2 | about £18.99 | View offer |
On this page
What you are actually buying
An acoustic sensor listens in the room for a pane breaking. A vibration alarm sticks to the surface and reacts to a blow on that pane. A manual call point does neither. If the bullets say peel and stick, you are in the vibration family.
Only the SimpliSafe Glassbreak Sensor, model 8960, is described as acoustic. Flintronic, Goerpn, and König behave as stick-on sirens. Jopwkuin at £10.99 claims vibration and a microphone, with a Ring title and no enrolment steps. Treat that conflict as unresolved.
One vibration siren watches the pane it is stuck to. A contact on the frame does not hear a smash if the casement stays shut. The acoustic sensor or vibration alarm page stays on that split.
Grade, PD 6662, and police response
Grade 2 is the label installers use when an insurer may ask for a domestic system. It is not a 130 dB claim. BS EN 50131-2-7-1 is the indoor acoustic part. PD 6662 calls up the acoustic and shock parts. This comparison has no shelf price for a Texecom or Aritech installer part.
None of the five amazon.co.uk listings states Grade 2, BS EN 50131-2-7-1, or PD 6662. Goerpn’s bullets say police recognised standards and name no standard. Ask the Police says forces attend alarms aligned with National Police Chiefs’ Council policy, and that most domestic alarms are audible only. If you can see a break-in, call 999 because of the crime, not because a sticker beeped. If a lender or an insurer is the reason you are shopping, ask an NSI or SSAIB installer what grade they will certify.
Glass, range, and a siren that only shouts
SimpliSafe’s UK pages allow ordinary single and double pane, not laminated glass, and they put the listener in the room. The amazon bullets say 20 ft, while the specification table says a maximum of 10 feet. The maker also says to avoid the kitchen. One UK review reports no false alarm there. Follow the maker unless you have tested that room.
Flintronic and Goerpn claim 130 dB and a 30-second alarm. One UK Goerpn review says 120 dB. König prints no decibel figure. A loud box that never trips has warned nobody. Laminated patio glass makes these five listings the wrong shortlist. The best glass break sensor page assigns each listing to a job.
A buying order you can follow
With a third-generation SimpliSafe system and ordinary double pane, the £34.99 sensor is the relevant row. With no hub, the four-pack at £18.99 covers more panes per pound than the £14.95 pair or the £8.10 König unit. Flintronic includes three LR44 cells. König’s cells are extra. Goerpn does not state a count.
A standalone siren shouts for about 30 seconds, then listens again. It does not text you. The acoustic sensor alarms through the system only after you add it from the keypad. Jopwkuin’s Ring line does not show those steps. If a firm knock will not trip the pane, another identical unit will not fix the glass type. Price is the last sort.
Common questions
Is a stick-on 130 dB alarm the same as a glass break detector?
A stick-on 130 dB alarm is a vibration siren on the pane, not the acoustic detector in a graded system. Flintronic and Goerpn print that claim. König does not. The number describes the siren, if it is accurate, and not how small a blow will trip the sensor.
Do I need one device per window?
You need one vibration siren per pane, because it feels the surface it is stuck to. One acoustic listener can cover the openings in a single room, and it does not cover the rest of the house. A contact on the frame still misses a smash that leaves the casement closed.
Will this call the police?
No listing in this set dials the police. Ask the Police says most home alarms are audible only, and that forces attend systems aligned with National Police Chiefs’ Council policy. Call 999 if you have evidence of a crime. A beep on its own is not that evidence.
What is Grade 2, and do these listings state it?
Grade 2 is what installers use when an insurer expects a certified domestic system. PD 6662 calls up the acoustic and shock parts. None of these five listings states Grade 2 or BS EN 50131-2-7-1. Goerpn’s police-recognised line does not add the missing number.
Can I add glass-break detection to an alarm I already own?
You can add the SimpliSafe sensor only to a third-generation SimpliSafe system, from the keypad. It is not a module for a Ring, Yale, or Texecom panel. A Ring title with no enrolment steps is not a reason to expect the Jopwkuin unit in the app.
What should I skip if the glass is laminated?
Skip the SimpliSafe sensor for laminated or anti-smash glass. The maker’s UK page allows single and double pane only. The stick-on listings publish no glass-type table, so a failed knock is a reason to stop, not to buy a second brand of the same siren.
Related pages
Sources
Public UK sources. Listing prices, stars, and review counts are from amazon.co.uk, not a live check on 19 October 2026.
- BS EN 50131-2-7-1 — indoor acoustic glass-break detectors (retrieved 19 October 2026)
- NSI Bulletin 0040, PD 6662:2017 — glass-break and shock parts (retrieved 19 October 2026)
- ProtectUK — alarms and CCTV (retrieved 19 October 2026)
- Ask the Police Q75 — audible-only alarms (retrieved 19 October 2026)
- SimpliSafe UK — Glassbreak Sensor (retrieved 19 October 2026)
- Westmorland and Furness Council — alarm noise (retrieved 19 October 2026)
- GOV.UK — 1982 audible intruder alarm code (retrieved 19 October 2026)
- amazon.co.uk listings for the five ASINs in this comparison (retrieved 19 October 2026)