The research on improvement of false alarm from the automatic fire detection system has been continually achieved in the meantime. But the research for the code-transmitter as one of component devices of the automatic fire detection system. In order to improve difficulty of the code-transmitter check-up, introduction for the address type-code-transmitter and the automatic recovery system for check up of the code-transmitter was proposed. In order to prevent against occurrence of noise and signal attenuation, introduction of the optical fiber cables that noise and signal attenuation do not occur and introduction for an optical communication relay that can apply to was proposed respectively.

The goals of automatic fire detection equipment in Japan and South Korea are the detection in early fire stage, alarm and finding the location of the fire. Japan also has similar operation system and signal transmission method compared with South Korea. The standards of fire detection equipment in Japan are established their own standards. The automatic fire detection equipment in Korea has been developed with benchmarking the Japanese system in early 1950’s and follows the decree on the basis of Japan’s fire services. NFPA 72, which is automatic fire detection equipment in U.S.A. and verified through the experiment and test, expects to reflect to our automatic fire detection equipment after modification and supplement.

The automatic fire detection system is an important facility installed with focusing on minimizing the damage from a fire. This paper presents in the followings as the methods to reduce the false alarm of the automatic fire detection system; first, to prepare for legal standard so that revised legal standard can be applied to the fire fighting property prior to revision; second, to introduce the performance based fire detection protection design in the law based fire protection design; third, to maintain the wiring of worn-out detector; forth, to introduce an evaluation system to the education for the fire warden; fifth, to extend the standard of MTBF(meantime between failure) of the detector; sixth, to extend of installing the analog type detector; seventh, to improve the structure of reset switch.