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Graduated sensory alert for a perimeter security system

  • US 9,530,296 B2
  • Filed: 08/25/2015
  • Issued: 12/27/2016
  • Est. Priority Date: 02/22/2011
  • Status: Active Grant
First Claim
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1. A perimeter security system, comprising:

  • a barrier; and

    a series of sensors secured to the barrier at spaced locations along the length of the barrier, wherein at least one of the sensors includes a detector for sensing the presence of a person or object in the vicinity of the sensor, and wherein the at least one sensor further includes a graduated sensory output responsive to the detector, wherein the graduated sensory output an output at the sensor that changes as the person or object approaches the detector.

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