It protects the boundary of a site: a fence, barrier or open area. Fence-mounted vibration sensors, infrared beams, microwave barriers and buried sensors are used.

It is used at warehouses, oil depots, industrial and high-security sites. It works well with CCTV: when a perimeter section is triggered, the camera shows that section immediately.

Practical tips

  • Split the perimeter into sections so the alarm location is easy to find.
  • Allow for vegetation and animals — common causes of false alarms.
  • Combine perimeter detection with cameras and lighting.