ProReact Digital - Thermocable
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Rapid Response

The ProReact range of digital linear heat detection cables is designed to trigger a response when a specific temperature is reached. If the temperature surrounding the cable reaches the activation temperature the two cores quickly come into contact and trigger an alarm. These cables are known as “digital” because they are “off” below the activation temperature and irreversibly switch “on” when the activation temperature is reached.

Protect more for less

Every inch of the ProReact Digital LHD cable acts as the sensor providing extensive and comprehensive detection over large areas. It is possible to connect 3,000 metres (10,000 feet) to any typical conventional or addressable fire alarm control panel or building management system providing greater protection than can be achieved using multiple discrete sensors.

Straightforward, Reliable and Compatible

ProReact Digital LHD cable has been designed to be simple to install and extremely reliable thus providing guaranteed protection year after year. Since the cable only responds to an overheat situation it works just as well in noisy, dusty or hazardous environments where other types of detectors may false alarm. Through design, the cable is compatible with any conventional or addressable fire alarm control panels or other building management systems.


  • UL521/FM Approved and RoHS compliant to meet end user specifications
  • Low material costs
  • Cable based sensing allows detection at the point of risk
  • Quickly locate and respond to an incident with the ProReact Digital Interface Monitor Module (DIMM)
  • Compatible with our range of ProReact Accessories
  • Short manufacturing lead time assures product availability and speed to market
  • Low installation, maintenance and repair costs reduce total cost of ownership
  • Reliability through design, approvals and 3 year warranty


ProReact Digital Interface Montior Module (DIMM)

A UL864 10th edition approved Digital Interface Monitor Module is available to provide additional benefits when used in conjunction with ProReact Digital LHD cable. Thermocable’s ProReact DIMM is designed to enhance the functionality of existing or new Digital LHD systems monitoring up-to two zones. A unique interlock/coincidence detection mode eliminates the possibility of false alarms by requiring both LHD cables to trigger before an alarm is transmitted. A built in display shows the state of each zone, including the distance in meters and feet to the alarm point if an alarm is triggered. It also includes an RS-485 Modbus RTU output for integration with a PLC or SCADA system.