Fiber Fence Convert Detection System


Fiber Fence Convert Detection System

  • Detect & locate in multiple zones ± 10m
  • Decorative & innocent looking
  • Be able to customize colors and appearances
  • Applicable To:

  • Places cares about well appearance such as VIP residences, government buildings & embassies


  • Decorative and innocent looking
  • Non-obtrusive
  • Modular in height and length
  • Exceptional Probability of Detection
  • Adjustable sensitivity
  • Minimum number of false alarms
  • No moving parts assures negligible false alarms
  • Low maintenance
  • Low power consumption – ~2W per 1 Km
  • Long life expectancy

InnoFence is designed to look like a regular high quality fence with a concealed fiber optic sensor for intrusion detection. It is made from pre-fabricated modules that are between 120 to 300 cm (3.9 to 9.8 ft.) and supplied in standard lengths of 2 meters (6.6 ft). It can be mounted on a low concrete base (free-standing) or wall-mounted. An alarm will be caused by cutting, bending, tampering with the upper cover or climbing (with or without a ladder). Fiber optic sensing components are mounted within the top channel of the module’s frame (bottom channel on wall-mounted). The concrete base is usually 200 mm (8 in.) wide and 500 mm (20 in.) high.


InnoFence is the perfect solution for high profiles sites such as VIP residences, government buildings and embassies. It is also installed at airports and industrial / commercial facilities worldwide.

How it works

The operating principal of the InnoFence is based on light transmission which is controlled inside a fiber optic cable. Any reduction in light transmission will generate a signal, which is evaluated by the processor, to decide upon generating an alarm.

The fiber optic components are mounted within the top channel of the module’s frame (bottom channel on a wall mounted system). It is installed to detect the mechanical forces acting on the module during a forced entry through or over it.

A special fence-mounted processor called a FOST (Fiber Optic System Transponder) receives and transmits light signals through the fibers in the fence modules, processes them and determines whether an alarm signal should be sent to the control system.

NexLen Internation Limited



Technical Description
Standard Module 2 m (6.6 ft.) long, 2.5 m (8.2 ft.) high
Optional Heights Minimum: 120 cm (3.9 ft.)
Maximum: 300 cm (9.8 ft.)
Material All metal parts steel SAE 1020
Finish Galvanized and primer painted
FOST (Fiber Optic Sensor Transponder)
  • The FOST is an outdoor transponder used for processing fiber optic signals. It determines alarms based on attenuation of optical signals in the fiber optic cables that are being used as sensors.
  • The FOST is designed to control two fiber optic cables and to transmit data to a control center via proprietary RS-422 communication cable or dry contacts
  • The FOST is fitted in an outdoor weatherproof enclosure with a covered tamper switch
  • 2 fiber optic cables
  • 2 end of line resistor supervised dry contact inputs
  • 1 tamper cover switch
  • Alarm relay - one Normally Open (NO) contact
  • Fail / alarm relay - one NO contact
  • Contact rating - 500 mA @ 50 V
Data communication Proprietary RS-422
Transient suppression On data and power input and on relay output contacts
Control Independent control of the output relay through communication line
Status indicating (LEDs)
  • Alarm by the fiber optic cables
  • Disconnection of fiber optic cable
  • Fail
  • Light transmission
Input voltage 12 - 30 VDC
Current consumption
  • RS-422 option - 4 mA
  • Dry contact option - 45 mA max
Operating temperature (standard) -20 °C to 70 °C (-4 °F to 158 °F)
Operating temperature (extended) -40 °C to 70 °C (-40 °F to 158 °F)
Humidity 20% to 95% condensing
Unit size Weather-proof enclosure per NEMA 12 / 13 - 240 x 155 x 100 mm (9.4 x 6.1 x 3.9 in.)

Specifications are subject to change without prior notice.

InnoFence Datasheet

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InnoFence Datasheet PDF Download