Digital linear heat detection cable is a conventional style heat detector, capable of detecting a fire along the length of the cable. This simple but effective system can be combined with smoke detectors to deliver multi-purpose systems. The product range consists of a standard two core cable of various temperature ranges, including the only FM approved heat detector for temperatures below 68 degrees Celsius. The XLT type cable has an alarm temperature of 57 degrees Celsius and is purpose built for cool room / freezer environments. Included in the range is a dual temperature sensor cable, and an alarm point locator. Digital linear heat detection is a cost effective and simple way to provide heat detection with continuous detection along its total length.