| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound stopping device of a fire alarm system capable of immediately releasing a continuous sound stopping function when a prescribed condition newly occurs even after the consecutive sound stopping function (continuous sound stopping function) is set. SOLUTION: When, for example, a fire detection signal as an erroneous report is output, for example, from a district line L1 to cause a sound device (for example, B1) to actually ring, bringing about a situation where the ringing of the sound device is desired to be stopped, the consecutive sound stopping function can be set for the first time. Even after the consecutive sound stopping function is set, the consecutive sound stopping function is immediately released when a fire detection signal is output from a plurality of district lines (for example, L1 and L2) among district lines L1 to Ln. COPYRIGHT: (C)2010,JPO&INPIT
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