MyJobQuote Logomyjobquote
  • Post a Job
  • Trade Signup
  • Ask a Trade
  • Cost Guides
  • About
  • Login
  • Over 1 million homeowners and over 30,000 tradespeople
    use MyJobQuote nationwide each year

    Post a Job or Sign up as a trade
    Post a Job or Sign up as a trade

    Ask a Tradesman

    How do glass break detectors function?

    Security Specialists

    Hi there. I’m considering having a new alarm system fitted in my property. I’m just wondering, how a glass break detector functions and how is it different to say a window sensor? Is it more sophisticated? Can it detect glass break where a window sensor might not??

    Asked by Harry on 15th Dec 2021
    Share this question

    Best Answer


    "When a pane of glass shatters, it creates a distinct sound frequency. An acoustic glass break sensor works by “hearing” the sound of shattering glass, then triggering an alarm.
    This can be used a room that as multiple windows."

    Answered on 15th Dec 2021 - Member since Jan 2021 - report
    J.J. Electrical

    "The break sensor is acoustic detecting and tuned to the sound of glass breaking as opposed to porcelain for example. So should in theory only alert only if your window is smashed.

    Essentially the benefit of a glass break sensor as opposed to window proximity sensors is that you could use a single break sensor in place of two or more proximity sensors. This would be the case in some situations where you have multiple windows in a room as the break sensors typically trigger up to twenty feet away."

    Answered on 5th Jan 2022 - Member since Aug 2021 - report
    Komtec Services

    "A window sensor detects the framework by using a magnet e.g. when open, the circuit is broken. Glass detect sensor is activated by vibration on glass when broken."

    Answered on 15th Dec 2021 - Member since Feb 2017 - report
    Sight and Sound Ltd

    "Window-vibe/sensors work on impact vibration. Break glass detectors are mounted in the room they pick up the window being broken. These use a audio microphone that recognises the frequency of broken glass. Some will pick up the vibration on the glass. They will alarm if the right frequency is picked up. These tend to be more popular."

    Answered on 15th Dec 2021 - Member since Nov 2021 - report
    Smart Vision Security Solutions

    "Hi, we use shock sensors on windows and doors mounted on the door frame or window frame they work from vibration for example if some one was to kick your door or bang your window the vibration triggers the sensor which triggers your alarm. You can change the sensitivity up or down depending where they are. They can also be doubled up as contacts with magnets the same as old style door and window contacts, hope this helps.

    Ben Carroll
    Smart vision security solutions"

    Answered on 15th Dec 2021 - Member since Dec 2021 - report
    Andrews Security

    "Hi Harry,

    Glass break detectors complement door and window sensors by monitoring sound or vibration. When they detect the frequency of shock waves associated with glass shattering, they sound an alarm."

    Answered on 5th Jan 2022 - Member since Mar 2021 - report

    Ask a Trade

    Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.

    Ask your Question

    Related questions

    Ready to get a price for your home improvement project?

    get started

    Report Content