Glass Break Detector
Glass break Detectors Are An Absolute Necessity
There is yet another kind of detector which detects glass breaks occurring when an intruder breaks glass windowpanes to enter a house for burglary or some other mala fide purpose. The glass break detectors are different from motion detectors in that they detect the intrusion of a person into the house from outside. The motion detector detects a prowler inside the house.
Both the hardwired and wireless versions are available. The hard wired is preferably planned when the house is being built as the wires are concealed. The wireless variety of Glass break detectors can be installed at any time after the building of the house is complete. The Glass break detector detects the sound of breaking glass emanating from about 30 feet away. It cannot hear from around corners or through walls or from a room just because it is open. The selection of the spot where the glass break detector is to be placed has to be wisely done. The maximum windows with glass must be under the surveillance of the Glass break detector.
The Glass break detector is activated by the frequency of breaking glass or the splintering of wood. Earlier there was a problem with these Glass break detectors. Other sounds could trigger false alarms. A visiting friend may sneeze and the Glass break detector sets off an alarm which makes the neighborhood shiver. Knocking two glasses together while washing them in the sink sometimes does the same. These are normal daily incidents which the Glass break detector detects as emergencies and faithfully goes on to complete its function by giving the alarm. In a stormy rainy season, lightning is one instance when a false alarm can be sounded by the Glass break detector. A pet cat or bird crying out may be sufficient to trigger a false alarm. These single technology Glass break detectors are gradually being withdrawn due to the increased possibility of false alarms. Dual technology Glass break detectors are now gaining popularity. In this Glass break detector, the frequency of breaking glass must follow a thumping noise. A sound where the Glass break occurs before the thump would not activate the alarm. The chances of a false alarm creating chaos are much less. The stress caused by avoidable false alarms may tell on our health. So these new varieties of Glass break detectors are welcome.
The disadvantage of the Glass break detector is that you have to spend heavily if you wish to bring every room with windows in your residence under surveillance. The best technique would be to keep these Glass break detectors in vulnerable rooms and use motion detectors to ‘keep an eye’ on the other areas. This cuts your cost for the security of your home.
The Glass break detectors are available in different forms and shapes depending on the area of use. If you have a large room with plenty of glass windows, a Glass break detector is essential and it would be worthwhile as this large area is covered. It would prevent entry itself of the intruder. If you use a motion detector in this situation, the person would have entered and will be already in. You can use the wall or ceiling type of Glass break detector here. There are types of Glass break detectors which can be placed outdoors too. The various types look different.
The acoustic Glass break detectors have a multidirectional microphone which detects the sound of breaking glass from the area around in the same room. The Glass break detectors appear to draw their energy from the breaking glass itself. It is not the actual sound of breaking glass which activates the system. It is the shockwaves which accompany the breaking of glass that are more involved in the activation of the alarm in the Glass break detectors.
Dual technology Glass break detectors employ a combination of two vividly different technologies for the purpose of security. Along with the hard wired or wireless variety, a passive infra-red addition or a combination with a microwave detector is chosen. These improve the function of these new-type Glass break detectors. These combinations are less prone to false alarms, hence the popularity.
In the single technology type, dropping car keys, dropping a glass which then breaks, jingling keys or radio broadcasts or television programs which show the breakings of glass are all Perpetrators of false alarms. New Glass break detectors are incorporating even a third technology with other infra-red rays. Variety does not cease to be invented. Additional infra-red sensors being put together have produced very competent Glass break detectors.
The improvement in the technology of Glass break detectors has improved the Glass break detection system so that the chances of false alarms have come down a great deal.
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