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  2. Electric fence - Wikipedia

    en.wikipedia.org/wiki/Electric_fence

    Charger for a plus-minus net fence. An electric fence is a barrier that uses electric shocks to deter people and other animals [note 1] from crossing a boundary. The voltage of the shock may have effects ranging from discomfort to death.

  3. Electrical tape - Wikipedia

    en.wikipedia.org/wiki/Electrical_tape

    Electrical tape, standard black. Electrical tape (or insulating tape) is a type of pressure-sensitive tape used to insulate electrical wires and other materials that conduct electricity.

  4. Razor wire - Wikipedia

    en.wikipedia.org/wiki/Razor_wire

    Razor wire—long-barb type on top of a chain link privacy-fence surrounding a utility power sub-station. Barbed tape or razor wire is a mesh of metal strips with sharp edges whose purpose is to prevent trespassing by humans. The term "razor wire", through long usage, has generally been used to describe barbed tape products.

  5. Pet fence - Wikipedia

    en.wikipedia.org/wiki/Pet_fence

    A pet fence or radio fence, is an electronic system designed to keep a pet or other domestic animal within a set of predefined boundaries without the use of a physical barrier. A mild electric shock is delivered by an electronic collar if its warning sound is ignored. The system was first invented and patented by Richard Peck in 1973. [1]

  6. Electric fence (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Electric_fence...

    Electric fence is a barrier that uses electric shocks to deter animals from crossing a boundary. Electric Fence may also refer to: Electric Fence, a memory debugger

  7. Perimeter fence - Wikipedia

    en.wikipedia.org/wiki/Perimeter_fence

    An example of detector applied on a perimeter fence is the mems accelerometer. The advantages of having a perimeter intrusion detection system are various, and of great importance, for example we obtain a remarkable capacity to analyse the information produced by each sensor, without the need to increase the resources at the centre.