Most home security systems feature motion detectors and entry sensors. However, if a burglar breaks a window to enter your home, these components alone may not trigger an alarm. That’s where glass break sensors come in. These sensors detect the sound of breaking glass, triggering an alert before an intruder steps foot inside.
In this guide, we’ll explain how glass break sensors work, how to install this equipment, and recommend the best ones for your home. Understanding these options can empower you to add a critical layer of protection to your security system, offering peace of mind whether you’re at home or away.
The 3 Best Glass Break Sensors of 2025
Here are our top three picks for the best glass break sensor.
Top 3 Glass Break Sensors
Specifications | Vivint Glass Break Detector | ADT Glass Break Sensor | Honeywell 5853 Wireless Glass Break Detector |
|---|---|---|---|
|
Best for |
Audio sensitivity |
Full monitoring |
Self-monitoring |
|
Sensor type |
Audio, wireless |
Audio, wireless |
Audio, wireless |
|
Sensor range |
20 feet |
25 feet |
25 feet |
|
Sensitivity settings |
4 |
4 |
4 |
|
Smart home capability |
With Vivint system |
With ADT system |
None |
|
Installation |
Professional |
Professional |
Do-it-yourself (DIY) |
Vivint Glass Break Detector
Vivint offers a glass break detector that comes bundled with the company’s smart home security packages. This sensor is a top-of-the-line model that can detect the initial break of glass along with shattering to reduce false alarms from strong winds or other sounds. Sensitivity settings are easy to change at the push of a button.
ADT Glass Break Sensor
ADT’s glass break detector pairs with the company’s app for a seamlessly integrated home security system. All of ADT’s products come bundled with 24/7 professional monitoring to keep your home safe.
Honeywell 5853 Wireless Glass Break Detector
If you’re looking to self-monitor your home security system—that is, only hear an alarm rather than send a signal to a professional monitoring company—the Honeywell 5853 is a good choice. Although it doesn’t pair with smart home devices, it offers similar technology to the above models in terms of range and sensitivity. You can even install the security system yourself.
What Is a Glass Break Sensor?
A glass break sensor or detector is just what it sounds like: a device that alerts a security system when the glass in a window or door is broken. While some models are triggered by vibration, those are prone to false alarms, so all the detectors considered here are audio sensors.
Benefits of Glass Break Sensors
Here are a few advantages that glass break sensors provide:
- Doesn’t require a window or door to open to trigger the alarm
- Covers sliding glass doors, which aren’t usually compatible with traditional entry sensors
- Can cover multiple windows and doors
- Protects valuables like trophy or display cases
How Do Glass Break Sensors Work?
Unlike a door or window entry sensor, which triggers when the two parts of the detector move apart, a glass break sensor monitors audio frequencies. In short, it recognizes the sound of breaking glass.
One sensor can cover multiple square feet of space, so one glass break detector per room is usually sufficient. These detectors are usually installed on walls or ceilings, and they don’t need to be pointed at the window or door to work.
What To Consider Before Buying a Glass Break Sensor
When picking out a glass break sensor, you’ll want to consider some fairly obvious factors like cost and method of placement. You’ll also want to consider the sensitivity settings on the detector. Since these sensors pick up audio frequencies, they may get triggered by a dropped drinking glass or even the sound of glass breaking on TV. Higher-quality sensors will analyze sounds at multiple levels to reduce false alarms.
Before buying a sensor, you should also take your current security system into account. Will the sensor you’re considering integrate smoothly with your existing system? Do you want the sensor to activate its own siren or send a signal to the central system for professional monitoring? Is the sensor resistant to tampering? Is it wired or wireless?
Also consider the type of glass installed in your home’s windows and doors. According to an ADT specialist we spoke with, you may not need glass break sensors if you have thicker glass, such as hurricane-resistant PGT glass, since the thicker material is less likely to break.
FAQs About Glass Break Sensors
What’s the difference between a glass break sensor and a window sensor?
Typically, “window sensor” refers to an entry sensor that triggers an alarm when the window is opened. However, a glass break sensor will send an alert when the window is broken whether or not the window opens.
Do glass break sensors really work?
Enhanced audio technology, battery life, and wireless capabilities mean that today’s glass break sensors are not only incredibly sensitive but discriminating when it comes to identifying the sound of breaking glass.
Can a dog bark set off a glass break sensor?
For owners of pets, a dog bark may set off a vibration-based sensor, which must be placed directly on the glass and alert to any strong vibrations. However, audio sensors such as the ones discussed above are tuned specifically to the frequency of glass breaking, so other sounds won’t trigger an alarm.
How can I test a glass break sensor?
Many units have a test mode that only requires a hand clap to ensure that the microphone itself is working. To test that the specific frequency will trigger the system, there are a number of audio and video files of glass breaking that DIY enthusiasts use. However, many people report mixed results when using “canned sounds,” so you may want to purchase a tester or speak to a home security professional.
Our Rating Methodology
We back up our home security recommendations with a detailed rating methodology that we use to objectively score each provider. Our research includes analyzing product specifications, reviewing service and plan information, speaking with customer service representatives, and analyzing customer reviews. We then score the provider against our review standards for system options, special features, installation options, connectivity and smart-home automation features, pricing, contract terms, warranty, usability, availability of a trial period, and trustworthiness to arrive at a final score out of 5 points.
