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The alarm systems based on Passive Infra-Red detectors catch the intruder, which is inside the room alreadyThe system based on Infra-Red barriers is intended to cause an alarm when intruder only intends to invade the premises, and there is still outside the buildingIR curtains can be also used to protect the...
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The alarm systems based on Passive Infra-Red detectors catch the intruder, which is inside the room alreadyThe system based on Infra-Red barriers is intended to cause an alarm when intruder only intends to invade the premises, and there is still outside the buildingThe curtain is composed of several active IR...