--- title: ADT Glass Break Sensor vs. ADT Window/Door Sensor description: ADT Glassbreak Sensors are perimeter protection devices for an ADT Monitored Security System - Call 1-800-310-9490 for more information. image: https://www.californiasecuritypro.com/hs-fs/file-388077696-png/images/adt_glass_break_detector.png --- ** **[Northern CA 800-310-9490 ](tel:1-800-310-9490)****[Southern CA 800-960-4590](tel:1-800-960-4590)**   *Search* ** [![securitypro-group-logo](https://www.californiasecuritypro.com/hs-fs/hubfs/securitypro-group-logo.jpg?width=295&name=securitypro-group-logo.jpg "securitypro-group-logo")](https://www.californiasecuritypro.com) ![adt-dealer-white](https://www.californiasecuritypro.com/hs-fs/hubfs/images/adt-dealer-white.jpg?width=295&name=adt-dealer-white.jpg "adt-dealer-white") # ADT Security Pro - Home Security Blog ## [ADT Glass Break Sensor vs. ADT Window/Door Sensor](https://www.californiasecuritypro.com/blog/bid/190665/adt-glass-break-sensor-vs-adt-window-door-sensor) Posted by [Lisa Trask](https://www.californiasecuritypro.com/blog/author/lisa-trask) on Thu,Nov 21,2013 @ 03:28 PM - [Tweet](https://twitter.com/share) ![ADT Glass Break Detector](https://www.californiasecuritypro.com/hs-fs/file-388077696-png/images/adt_glass_break_detector.png?width=197&name=adt_glass_break_detector.png "ADT Glass Break Detector") Prevention is the best protection so adding an extra layer of perimeter safeguarding by installing an [ADT glass break sensor](https://www.californiasecuritypro.com/home-security-equipment-ADT/) to your existing security system may not be a bad idea. This enhancement offers better peace of mind knowing that there is protection against home invasions. Protecting doors and windows from intrusion with [window/door sensors](https://www.californiasecuritypro.com/blog/bid/90938/ADT-Home-Security-Door-and-Window-Sensors) are not enough because the sensor will only activate if the window or door is opened. If an unwanted intruder breaks or shatters a door or window, they can climb through and freely walk about your home or business without setting the alarm off. If you have motion detectors placed strategically inside your home or business, the intruder would eventually trigger the alarm once inside. The glass break sensor will set the alarm off **before** the intruder gets inside! If you don't already have an existing [ADT monitored security system](https://www.californiasecuritypro.com/adt-cellguard-cellular-alarm-system/DSC-Impassa-9057/), you may want to include an ADT glassbreak sensor with your order. Learn more by scheduling a [free home security review](https://www.californiasecuritypro.com/adt-offers/) of your property, call 1-800-310-9490 for special offers. [![SCHEDULE A FREE HOME SECURITY REVIEW](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/137046/db614724-60f3-40c9-86ec-fdfc4d036602.png)](https://hubspot-cta-redirect-na2-prod.s3.amazonaws.com/cta/redirect/137046/db614724-60f3-40c9-86ec-fdfc4d036602)   ## How Does an ADT Glass Break Sensor Work? ![ADT Glassbreak sensor](https://www.californiasecuritypro.com/hs-fs/file-385090244-jpg/images/daves_e-_cigs_broken_door.jpg?width=165&height=220&name=daves_e-_cigs_broken_door.jpg)An [ADT glassbreak sensor](https://www.californiasecuritypro.com/blog/bid/90933/ADT-Home-Security-System-Glassbreak-Sensor) is similar to a window or door sensor as it is a type of perimeter protection but it also serves a different purpose. Although the two sensors work together for protection, a glassbreak sensor picks up the actual frequency of broken glass using an audio microphone. The glassbreak sensor must be placed within 20-25 feet of the glass you are protecting with a clear site line. When glass is broken or shattered the glassbreak sensor detects the noise and the alarm is then activated. This works especially well in a business that has a glass front or a home with large windows and sliding glass doors. ![ADT Glass Break Sensor](https://www.californiasecuritypro.com/hs-fs/file-388245036-jpg/images/glass_break_sensor.jpg?width=121&height=104&name=glass_break_sensor.jpg)To recap, the window/door sensor protects your home or business when the door is forcibly opened and the glassbreak sensor safeguards you when someone breaks the glass and tries to climb in through that space. By having both types of protection you can be assured you are fully protected against criminal activity.  Many people really like the added protection of an ADT glassbreak sensor because the alarm will sound before an intruder even enters your home. In most cases, when a burglar hears an alarm they will immediately leave. People just want to feel safe and know their property is safe when traveling on vacation so by adding this extra layer of protection offers them no worries.  #### For more information call us at 1-800-310-9490.   [![SCHEDULE MY FREE HOME SECURITY REVIEW](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/137046/cc720953-7f00-47a0-911d-69dce4e9926e.png)](https://hubspot-cta-redirect-na2-prod.s3.amazonaws.com/cta/redirect/137046/cc720953-7f00-47a0-911d-69dce4e9926e)     Tags: [ADT Pulse Equipment and Packages](https://www.californiasecuritypro.com/blog/topic/adt-pulse-equipment-and-packages) ### Subscribe by Email ### Table of Contents - [Activate Existing Alarm System](https://www.californiasecuritypro.com/blog/?Tag=Activate+Existing+Security+System) - [ADT Monitoring Service and Pricing](https://www.californiasecuritypro.com/blog/?Tag=ADT+Monitoring+Service+and+Pricing) - [ADT Pulse](https://www.californiasecuritypro.com/blog/?Tag=ADT+Pulse) - [Cellular Security Systems](https://www.californiasecuritypro.com/blog/?Tag=Cellular+Security+Systems) - 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