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  2. Perimeter fence - Wikipedia

    en.wikipedia.org/wiki/Perimeter_fence

    Vertical bar fencing has been the most popular form of perimeter security fence since the 1980s. Since the 2000s, welded wire mesh and acoustic barriers have also become popular types of perimeter fence around the world. Vertical bar, acoustic barriers and welded mesh are used in commercial projects and landmarks, [1] and transport hubs. [2]

  3. Electric fence - Wikipedia

    en.wikipedia.org/wiki/Electric_fence

    A piggyback electric fence is mounted off the back of an existing wire or mesh fence, adding another level of security to the existing perimeter barrier. The piggyback profile is fastened to existing fence posts (e.g. pillars of a palisade fence) using rivets or screws. These are the most commonly used security electric fences. Wall top

  4. Fence - Wikipedia

    en.wikipedia.org/wiki/Fence

    Typical agricultural barbed wire fencing Sioux Mems Pro2 Split-rail fencing common in timber-rich areas A chain-link wire fence surrounding a field Portable metal fences around a construction site A snow-covered vaccary fence near Ramsbottom in Greater Manchester, UK Between fence and hedge: Acanthocereus tetragonus, laid out as a "living fence", rural area, Cuba

  5. Electric gate - Wikipedia

    en.wikipedia.org/wiki/Electric_gate

    Electric gates are recommended to be used in combination with other security features to install a full security system. A few of these features are closed circuits with security cameras , additional gates in conjunction with the main gate, electronic keycards and keypads, security guards .

  6. Perimeter security - Wikipedia

    en.wikipedia.org/wiki/Perimeter_security

    In the context of a perimeter fence, [10] MEMS sensors can be attached to the fenced area. These sensors could detect changes in pressure or vibration caused by someone attempting to climb over or cut through the fence. The sensors then transmit an alert to a security system, allowing security personnel to respond quickly to the attempted breach.

  7. Chain-link fencing - Wikipedia

    en.wikipedia.org/wiki/Chain-link_fencing

    Chain-link fencing showing the diamond patterning A chain-link fence bordering a residential property. A chain-link fence (also referred to as wire netting, wire-mesh fence, chain-wire fence, cyclone fence, hurricane fence, or diamond-mesh fence) is a type of woven fence usually made from galvanized or linear low-density polyethylene-coated steel wire.

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