DISPERSION TYPE AUTOMATIC FIRE ALARM SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a dispersion type automatic fire alarm system capable of confirming an abnormality of a transmission line accurately. SOLUTION: Each of a plurality of relay devices 2 is connected with one or a plurality of fire prevention equipment and is provided with one or a plurality of processing units 3. A receiver 1 recognizes the results of confirming transmission per unit of the processing units 3 per unit of relay devices 2 to which each processing unit 3 belongs to judge normality or abnormality of transmission lines A, B connecting each relay device 2.