A Linear Heat Detection (LHD) system is designed to monitor and detect changes in temperature along the length of a sensor cable. A fiber optic LHD uses standard fiber optic sensor cables, typically over lengths of several kilometers, that function as linear temperature sensors. These systems are. Designed for use in a wide variety of indoor and outdoor applications, Linear heat fire alarm cables are particularly suited for applications which require fire detection within close proximity or in harsh environments where other forms of fire detection are ineffective. Unlike traditional electrical temperature measurement (thermocouples & RTD), the length of the fiber optic cable is the temperature. The DTSX1 Fiber Optic Linear Heat Detection system provides an innovative solution for temperature sensing, particularly in industrial settings.