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  2. Perimeter intrusion detection - Wikipedia

    en.wikipedia.org/wiki/Perimeter_intrusion_detection

    A fence-mounted perimeter intrusion detection system installed on a chain link fence. A perimeter intrusion detection system (PIDS) is a device or sensor that detects the presence of an intruder attempting to breach the physical perimeter of a property, building, or other secured area.

  3. Security alarm - Wikipedia

    en.wikipedia.org/wiki/Security_alarm

    Wireless home alarm system control panel A house alarm. A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary or property damage, as well as against intruders.

  4. Category:Perimeter security - Wikipedia

    en.wikipedia.org/wiki/Category:Perimeter_security

    Outdoors mechanical and/or electronic systems conceived to protect the external perimeter of a facility. Usually applied in Homeland Security and other private high risk facilities. Subcategories

  5. Passive infrared sensor - Wikipedia

    en.wikipedia.org/wiki/Passive_infrared_sensor

    A PIR motion detector used to control an outdoor, automatic light. A camera trap with PIR motion detector. An indoor light switch equipped with PIR-based occupancy sensor [1] A PIR-based motion detector is used to sense movement of people, animals, or other objects. They are commonly used in burglar alarms and automatically activated lighting ...

  6. Perimeter surveillance radar - Wikipedia

    en.wikipedia.org/wiki/Perimeter_Surveillance_Radar

    A good PSR should have a designed false alarm rate of two or less false alarms per day. (A false alarm should not be confused with a nuisance alarm caused by, for example, an animal). Characteristics of some perimeter surveillance radar systems: Carrier frequencies range from C-band (about 5 GHz) to W band (about 77 GHz).

  7. Perimeter security - Wikipedia

    en.wikipedia.org/wiki/Perimeter_security

    Since at least the Roman Empire, fortifications, walls and barriers have been an important part of protecting sovereign territories and private property. Perimeter security is designed with the primary purpose to either keep intruders out or captives contained within the area the boundary surrounds.