Sabre Cable Theft Detection

  • Sabre Cable Theft Detection

The Sabre cable theft detection system provides a reliable, covert and highly effective early warning of potential cable theft from troughs, hangers or overhead gantries.  Utilising a fibre optic sensor cable and digital signal processing analysers, the Sabre system is able to operate in harsh environments prone to either Electromagnetic or Radio Frequency disturbance.   The sensor cable can be covertly installed as part of a new installation or easily retrofitted to existing installations.  Early warning alarms can be provided via a Remsdaq StarWatch integrated alarm and video management solution or via simple volt free contact for connection to third party alarm or SCADA systems.

  • Maximum zone length of 2km
  • Fibre optic sensor cable immune to EMI/RFI interference
  • High Probability of Detection (POD), low false alarm rate
  • Robust sensor cable with anti-rodent protection
  • Simple installation technique for rapid deployment
  • Low power 12v dc operation
  • Solar panel option
  • Wireless communications option
  • Local, regional, national alarm generation with video verification

Power Requirements

  • 11.0 – 14.0V DC @ 300mA


  • High performance microcontroller with integral digital signal processor (DSP) and Analogue-to-digital (A to D) converter

Sensor Cable and Connections

  • Sabre II is designed for use with SabreFonic and SabreLine sensor cable

Method of Detection

  • Laser diode transmitter with speckle pattern detection using photo diode receiver

Alarm Relay Output

  • One single pole relay contact with changeover contacts rated for 1A @ 12V DC

Ancillary Outputs (Open Collector)

  • Two open collector outputs with a maximum rating of 100mA @ 24V DC

Installation, Test and Diagnostic Aids

The Sabre II PCB incorporates a simple user interface comprising toggle switch, push button and 3 seven segment displays and allows all necessary settings to be easily configured without the need for specialist test equipment. A number of operation and diagnostic LED indicators are also included to facilitate test and commissioning. An audio monitor output is also available which may be used as an additional commissioning aid.


  • Electrical connections to the PCB are made via quick disconnect screw terminals. Serial communications cabling is via PCB mounted RJ 45 connectors

Status / Digital Inputs

  • 3 tamper protected status inputs are available which may be derived from switches or relay contacts, open collectors or CMOS / TTL level digital signals. The digital signal inputs provide the means by which external equipment may control the unit’s auto-threshold values.

Environmental Specification

  • Operating Temperature Range: -10°C to +50°C
  • Storage Temperature Range: -40°C to +80°C
  • Relative Humidity: Up to 95% (non-condensing) at +40°C

Electromagnetic Compatibility

  • The Sabre II meets the requirements of EN55022: 1998, EN50082-1: 1998 and Low Voltage Directive 93/68/EEC


  • 158mm x 111mm