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Linear Heat Detection Cable

Please note that Pertronic-Anbesec LHD Cable is preferred for new installations.

Linear Heat Detection Cable (LHD) is designed for use where traditional point heat detectors are unsuitable.

The LHD is a fixed temperature sensor capable of initiating an alarm if its temperature threshold exceeded.

It consists of two tri-metallic conductors twisted together to keep them under mechanical tension. Each conductor is individually coated in a temperature-sensitive polymer that detects heat conditions anywhere along its length.

It is not required that a specific length be heated in order to initiate an alarm. Therefore, LHD provides the advantage of line coverage with point sensitivity.

LHD cable is available with a PVC or Nylon outer sheath.

Typical applications include tunnels, mining, manufacturing, warehousing, cold stores, communications and general instustry, etc.


  • Suitable for use with Pertronic NZS 4512:2010 conventional zones of Loop Responder, Apartment, Module, F1, F4, F16e
  • Simple installation using standard 10 kΩ EOL resistor and one alarm resistor in series with the LHD cable
  • Can be used for Hazardous areas with Galvanic Isolator
  • Available: 200 m and 500 m drums
  • Maximum Zone Length: 3,000 m
  • International Approvals: CE marked, RoHS compliant, UL, FM, GOST-R
  • Available temperature thresholds: 68 °C, 78 °C, 88 °C, 105 °C