Best glass break sensor UK
Updated: 20.10.2026
You want the best glass break sensor UK shoppers can order today, and the five amazon.co.uk listings in this set do not share one job. The highest star line belongs to a listener that does nothing without a SimpliSafe hub. The widest cover per pound is a pack of vibration sirens that shout at the pane and then stop. This page assigns each listing. The [glass break detector comparison](/hub/burglar-protection/glass-break-detector) holds the full table, including prices from £8.10 to £34.99. Nobody smashed a window for this page. A qualifying purchase can earn a commission at no extra cost to you.
You want the best glass break sensor UK shoppers can order today, and the five amazon.co.uk listings in this set do not share one job.
You want the best glass break sensor UK shoppers can order today, and the five amazon.co.uk listings in this set do not share one job. The highest star line belongs to a listener that does nothing without a SimpliSafe hub. The widest cover per pound is a pack of vibration sirens that shout at the pane and then stop. This page assigns each listing. The glass break detector comparison holds the full table, including prices from £8.10 to £34.99. Nobody smashed a window for this page. A qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Detection | Pack | Power | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  SimpliSafe SimpliSafe Glassbreak Sensor | Acoustic | 1 sensor | 1 CR123A included | 7.8 | about £34.99 | View offer |
| Alternative |  Goerpn Goerpn 2-pack window alarm | Vibration | 2 sirens | Count not stated | 6.1 | about £14.95 | View offer |
| Best value |  Flintronic Flintronic 4-pack window alarm | Vibration | 4 sirens | 3 LR44 included | 7.2 | about £18.99 | View offer |
On this page
Best acoustic add-on when you already have SimpliSafe
The top pick is the SimpliSafe Glassbreak Sensor, model 8960, at £34.99, with 4.7 from 44 reviews. The listing says it tells a window smash from a plate breaking, that it is not standalone, and that you need a third-generation SimpliSafe system. One CR123A is included. A UK review describes enrolment in about five minutes.
That star line is not a reason to buy a hub you do not own. The bullets say 20 ft, while the specification table says a maximum of 10 feet. SimpliSafe’s UK page allows ordinary single or double pane, not laminated glass, and says a kitchen is a poor neighbour. Four UK texts sit under the headline, and none describes a break-in. Place the mount from the how to fit a glass break detector page.
Best value stick-on pack
The best value is the Flintronic four-pack at £18.99, about £4.75 a siren, with 4.1 from 127 reviews. The listing claims 130 dB, includes three LR44 cells, and says the alarm runs for 30 seconds. UK reviews praise a slimmer case.
The Goerpn two-pack is £14.95 for two, about £7.48 each, with 4.2 from 68 reviews. The cell count is not stated, and one UK reviewer heard 120 dB rather than 130 dB. The bullets say police recognised standards and name none. Sensitivity is not stated as adjustable on either pack. UK reviews include a wheelie bin that tripped a Flintronic unit, and panes that would not trip at all. If the first knock fails, the acoustic sensor or vibration alarm page is the fork.
When the cheaper single units are a weak bet
The König SEC-AGB10 is £8.10, with 3.2 from 20 reviews. UK reviews describe selectable sensitivity, AAA cells you supply, and a siren loud enough for the household. The same file includes a false alarm with nobody at the window and adhesive that let the alarm fall off. There is no decibel figure. The listed size, 165 × 159.99 × 30 cm, conflicts with a weight of 40.8 g.
The Jopwkuin listing at £10.99 has no star line and no review text. The title says Ring Alarm compatible. The bullets do not say how to enrol it. The specification table says vibration, and other lines say a piezoelectric sensor and a microphone. König is a possible single pane only if you will buy AAA cells and accept that small file. Jopwkuin stays off the shortlist until the listing states one technology.
Who should not use this shortlist
Leave this shortlist if the glass is laminated or anti-smash and you wanted the SimpliSafe sensor. Leave it if an insurer or a police-response condition asks for Grade 2 under PD 6662. None of these five listings states that grade or BS EN 50131-2-7-1. The packs shout for about 30 seconds and do not message you.
Existing SimpliSafe and ordinary double glazing: model 8960. No hub and several panes: the Flintronic four-pack, tested on the glass. Two panes only, if a hard knock is enough of a test: the Goerpn pair. The glass break detector buying guide walks the standards point if that condition is the one that stops you.
Common questions
Which listing is the top pick if I already own SimpliSafe?
The SimpliSafe Glassbreak Sensor, model 8960, at £34.99. Add it from the keypad of a third-generation system. The range lines disagree, laminated glass is excluded, and four UK reviews do not describe a break-in. Buy it as an add-on, not as a siren.
Which pack covers the most windows per pound?
The Flintronic four-pack at £18.99, about £4.75 a unit, with three LR44 cells included. The Goerpn pair is about £7.48 each, and König is £8.10 with cells extra. UK reviews of the four-pack include sirens that never alarmed when the window was struck.
Is the 4.7-star sensor better than the 4.1-star four-pack?
They suit different jobs. The 4.7 needs a SimpliSafe system and has no stated siren of its own. The 4.1 is four local vibration sirens, 127 reviews against 44. The star line hides the hub you do not own.
Should I buy the £8.10 König unit?
Only for a single pane, if you want the sensitivity control UK reviews describe and you will supply AAA cells. The star line is 3.2 from 20, a UK review records a false alarm with nobody at the window, and adhesive failures appear in the file. There is no decibel figure in the specification table. It is the cheapest row, and it is not the best value in this scoring.
Is the £10.99 Ring-compatible title a safe pick?
No. Ring Alarm compatible appears in the title, and the bullets do not describe enrolment. The same listing claims vibration, a piezoelectric sensor, and a microphone. The file has no reviews. A two-stage potentiometer and a tamper shell are claims without a UK report that either works. Use a product whose sensor type survives contact with its own specification table.
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)