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Intruder detection and alarm system - has alarms encased within door or window frames to provide unobtrusive or undetachable protection of building
Intruder detection and alarm system - has alarms encased within door or window frames to provide unobtrusive or undetachable protection of building
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机译:入侵者检测和警报系统-将警报包裹在门或窗框内,以提供对建筑物的醒目或不可拆卸的保护
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摘要
One or more complementary detectors are integrated into the door or window frame of an opening to be detected. The intruder will then be unaware of their presence and will not attempt to by-pass them. The framing may be p.V.c. thus requiring no painting, and the aesthetic aspect of the building will not be disfigured since the detectors are hidden. - Detectors envisaged may operate using seismic (spring or balance beam), magnetic (coded or non coded), field effect (capacitance), mechanical (spring, microswitch), optical, or electronic (ultrasound, infra red) sensing. The device may allowa window to be opened for ventilation while providing protection against intruders.
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