Glass Breakage Detector: Review & Recommendations

Welcome to our big glass breakage detector test 2020, where we present you all the glass breakage detectors we have tested in detail. We have put together detailed background information for you and also added a summary of the customer reviews on the net.

We would like to make your purchase decision easier and help you to find the best glass breakage detector for you.

You can also find answers to frequently asked questions in our guide. If available, we also offer you interesting test videos. Furthermore, you will also find some important information on this page, which you should pay attention to if you want to buy a glass breakage detector.

The most important facts in brief

  • Glass breakage detectors offer the possibility to protect your own home from burglars. They monitor windows and glass doors and trigger an alarm as soon as the breakage of a shard is detected.
  • There are three different variants: active, passive and acoustic glass breakage detectors.
  • Some models can be seen from the outside. This can also be assumed to have a deterrent effect against potential burglars.

Glass breakage detector in test: the ranking

1st place: k

2nd place: ABUS glass breakage detector passive GBM7300

3rd place: Blaupunkt wireless glass breakage detector SVGS-S2

Advisor: Questions you should deal with before you buy a glass breakage detector

However, many systems for monitoring one’s own home are associated with great financial expenditure and conversion measures.

One way to easily and uncomplicatedly secure your own home against burglary is to use glass breakage detectors. They alert you as soon as they register the breakage of a window pane.

This way, glass breakage sensors protect you from people who secretly want to gain access to your apartment or house through a window or French door.

What is a glass breakage detector?

Glass breakage detectors belong to the category “security technology” and thus supplement other possibilities for building monitoring.

Glass breakage detectors are usually installed in addition to motion detectors or video surveillance systems. There are even systems that combine these elements.

Other variants of the glass breakage detectors function autonomously. This means that you can use them to protect your windows and glass doors against burglars without much effort.

What types of glass breakage detectors are available?

Glass breakage detectors are divided into different device types, depending on their mode of operation. A distinction is made between active, acoustic and passive glass breakage detectors.
They have different modes of operation and therefore also differences in the recommended area of application.
Active glass breakage detectors offer the highest protection, but are also the most expensive.
Passive glass breakage detectors are relatively inexpensive compared to other devices, but are only suitable for protecting double-glazed panes.
Acoustic glass breakage detectors have the advantage that you can use them to protect several glass surfaces in a room against burglars.

How does an active glass breakage detector work?

Active glass breakage detectors have an ultrasonic transmitter and at least one, but often several receivers. Both components are usually housed in the same component. Infrasonic waves are caused by changes in air pressure when a pane breaks.
The transmitter causes the pane to be protected to vibrate permanently, which is evaluated by the receiver. If the pane is damaged, a change in the vibrations is registered and an alarm is triggered.
Active glass breakage detectors are also known as area detectors.

How does an acoustic glass breakage detector work?

The classics among the passive sensors are the acoustic glass breakage detectors. They react to airborne sound and are installed in the room where the windows or doors to be monitored are located.
They operate with the help of a built-in microphone that registers the typical frequencies triggered by the breakage of a glass pane.
These are usually low frequencies caused by the breaking of the glass and then high frequencies caused by the breaking of the glass. Acoustic glass breakage detectors draw the required supply voltage from a standard battery or via wiring.

The advantage of acoustic glass breakage detectors: With one device you can monitor several windows and doors in the same room. In most cases, all windows are detected within a radius of about seven to 10 metres.

The minimum size of the shattering disc is 30x30cm. This prevents the alarm from being falsely triggered even if a drinking glass falls down, for example.

How does a passive glass breakage detector work?

Passive glass breakage detectors work similarly. Just like their acoustic relatives, they are mounted directly on the pane. They are also known as vibration detectors and monitor a radius of 1 to 2 metres.
A built-in, so-called piezoelectric sensor then registers the sound waves that occur in the event of glass breakage.
The disadvantage of this is that no alarm is triggered if the glass is damaged by a glass cutter.

With passive glass breakage sensors you should note that they are only suitable for mounting on silicate glass. This means that the pane must not be made of laminated safety glass or glass-like plastics. Furthermore, it should not be covered with protective film or similar or painted.

Why do you need a glass breakage detector?

Glass breakage detectors are part of the building surveillance against burglars. With them you can not only secure your windows, but also protect house and terrace doors on the balcony against unwanted visitors. Passive glass breakage detectors are particularly easy to install.

The protection of your own home can be considerably improved with a glass breakage detector. In addition, many homeowners also opt for video surveillance systems or alarm systems.

Where can you buy a glass breakage detector?

The best place to buy a glass breakage detector is at a hardware store or online.
On the Internet you will find among other things:

But there are also some online providers that specialize in security technology. A large selection of all glass breakage detector variants can be found, for example, at

  • Bc-safety

What are the advantages and disadvantages of buying online?


Large selection
Good comparability of the models
Favourable prices
home delivery


Quality of glass breakage detectors cannot be checked online

What are the advantages and disadvantages of buying locally?

You can also buy glass breakage detectors in DIY stores or in well-stocked electrical stores. If personal advice is important to you, however, you should rather visit a specialist shop.

The employees there know exactly whether an active, a passive or an acoustic glass breakage detector is the right alternative for you.

For the active version in particular, specialist dealers also offer support in installing the burglar protection. This ensures the best possible protection against burglars.


Personal consultation, if desired
Protection against mispurchases
Quality of the materials can be checked on site


Less choice than online
Often higher prices

Which important manufacturers of glass breakage detectors are there?

The market leaders in this field are:

security center
KH Security

Some manufacturers have specialized in security systems. However, you can also get high-quality products from other manufacturers whose range is more extensive.

What does a glass breakage detector cost?

The price for your new glass breakage detector varies greatly depending on the variant that is of interest to you. Basically, it can be said that buying online is cheaper than buying from a specialist dealer.
However, you also forego qualified advice and recommendations on which security solution is best for you.

Tip: Passive glass breakage detectors are often also available in sets of 6 or 10. This way you can save shipping costs and protect several windows and doors against burglary.

What is the safety class according to VdS?

The task of VdS Schadenverhütung is to test not only alarm systems, smoke detectors etc. but also products for protection against burglary for their functionality and reliability.
Thus, glass breakage detectors are also within its responsibility. If the result is positive, the tested products are awarded a seal of approval.
Passive and acoustic glass breakage detectors are usually assigned to security class B. This means that they detect certain events, in this case the breakage of the glass.
However, in order to belong to safety class C with the highest safety standard, the devices must also trigger when the sensors are manipulated. This is usually only certified for active glass breakage detectors.

Decision: What types of glass breakage detectors are there and which one is right for you?

Glass breakage detectors can basically be divided into three different variants:

  • Active glass breakage detectors
  • Acoustic glass breakage detector
  • Passive glass breakage detectors

What distinguishes the different types in detail and where the individual advantages and disadvantages lie, we will show you in this paragraph.

What distinguishes an active glass breakage detector and what are its advantages and disadvantages?

Active glass breakage detectors can be used for any type of glass. Of the three variants, however, active glass breakage detectors are by far the most expensive solution. On the other hand, they offer the greatest possible protection.


Can be used for all glass types
Offers the highest security level


Requires its own supply voltage
Most expensive variant

What distinguishes an acoustic glass breakage detector and what are its advantages and disadvantages?

Acoustic glass break detectors are especially recommended if you want to protect several glass panes at once against burglary, for example a patio door made of glass and a large window next to it.


Monitors multiple discs simultaneously


Mostly not visible from the outside
 Not suitable for all glass types

What distinguishes a passive glass breakage detector and what are its advantages and disadvantages?

Compared to the other variants, passive glass breakage detectors are particularly inexpensive, but still fulfil their purpose: namely to trigger an alarm as soon as someone destroys the glass on which the sensor is mounted.

Burglaries with a glass cutter are not detected by them. A glance at the statistics, however, quickly reveals that these are of little importance in classic domestic burglaries anyway, because the burglary is much more costly than the use of brute force.


Can be detected from the outside (deterrent effect)


Glass cutters are not recognized
Suitable only for panes with double glazing
Only medium safety level

Purchase criteria: You can compare and evaluate glass breakage detectors based on these factors

We have collected the most important criteria for you, which you can use to evaluate and compare different types of glass breakage detectors.

The criteria that you should consider more closely when deciding on the best glass breakage detector for you are the following:

  • Glass breakage detector variant
  • Dimensions
  • Autarkic operation
  • Alarm volume
  • Power supply

Glass breakage detector variant

Depending on the budget and planned use, all three types have their advantages and disadvantages. Before buying, you should therefore think about what exactly you want to achieve with the glass breakage detector and how much you can and want to invest in it.


Glass breakage detectors can be round or rectangular. The smallest available devices have a diameter of about 5 cm, larger ones can be up to 20 cm long.

The advantage of a large glass breakage detector: burglars can also see it quickly and may be deterred from the outset.

The disadvantage: Some people find the devices disturbing – especially the passive version, which is mounted directly on the glass.

Tip: use an acoustic detector, it is not so present at least when looking out of the window.

Autarkic operation

While some glass breakage detectors only function as part of an entire alarm system, others can be installed independently.

You should pay attention to this when purchasing in order to be able to use the glass breakage detector as planned.

Alarm volume

For the audible alarm signal to be effective, the volume should be at least 90 decibels. Good models are equipped with a volume of over 100 dB, some even 120 dB and more.

Power supply

Most acoustic and passive glass breakage detectors are battery operated. This means that they will continue to work even if there is a power failure in the house. When the battery is running low, the glass breakage detector will emit a more inconspicuous acoustic signal or light up red.

Trivia: Useful facts about glass breakage detectors

How useful is a dummy glass breakage detector?

Glass breakage detectors that are clearly visible from outside often have a deterrent effect on burglars.

If they see the danger of triggering an alarm, they often shy away from a burglary from the outset and prefer to turn to easier prey. A good dummy glass breakage detector can therefore be helpful.

On the other hand, passive glass breakage detectors are only slightly more expensive to purchase than dummies. Therefore, you should consider whether you should accept a small extra charge and decide on a functional glass breakage detector.

Are glass breakage detectors without security certification recommended?

Devices without VdS certification lack the seal that the glass breakage detector has passed the official VdS test

When buying from reputable vendors, however, you can usually assume that the detectors at least fulfil their actual purpose: To send out an audible signal when a glass breakage is detected.

Which batteries do I need for a glass breakage detector?

Most glass breakage detectors operate electrically. This means that they require their own supply voltage, which they obtain from a standard AA or AAA battery.

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