How do window sensors work?

Question

Could you let me know how a window sensor works for an alarm system? How can I ensure it will be well maintained?

Dawit · Accepted Answer

There are generally two types of window sensors, 

1 - vibration sensor- will trigger an alarm upon breaking the glass 

2- contact sensor - when the window is opened it will trigger an alarm

John · Answer

There's a few types of window sensors, 

vibration sensor generally as the glass is breaking it will trigger the alarm

Ajax alarms do things a little different their glass sensor activates on the bang of the glass and as the treble of the glass smashes but it must use this 2 stage activity to trigger the alarm 


contact sensor very much the same as a door sensor when the window is opened it will trigger the alarm 

Agin Ajax do this a little different they have a tilt sensor so for the likes of Velux windows you can have the alarm set with a set degree say a maximum of 5 degrees once the sensor is pushed past this point it will trigger the alarm

Jon · Answer

There are two different types. There are contacts, so they will change state when the window is opened or closed with physical movement. Then there are shock sensors that will sense if the window has been smashed or has been hit with force.

Alexander · Answer

Hi Pete, 

So a window sensor works like this: 

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.

To make sure it is well maintained, it is recommended by us engineers that we service the system once a year to make sure everything is as it should be. If you have any concerns or issues prior to the service, then, by all means, we can have a look at the system as a problem arises.

How do window sensors work?

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