Heat fire detector is one of the widely used fire detectors. It is very suitable for some fires that produce a large amount of heat and smoke-free or a small amount of smoke, as well as places where smoke detector is not suitable for smoke fire detector due to large dust, high humidity, smoke and steam retention under normal conditions.
With the development of science and technology, new types of temperature sensitive fire detectors continue to appear, such as temperature sensitive fire detectors using new semiconductors and thermal materials, and cable type temperature sensitive fire detectors developed for large buildings, subways, tunnels and other special places. Optical fiber temperature sensing fire detector, and has been widely used in industrial and civil buildings. It plays an important role in realizing early fire alarm, preventing and reducing fire.