| 摘要 |
PROBLEM TO BE SOLVED: To shorten a time when a plurality of fire alarm devices interlockingly notify a fire alarm while reducing false alarms in which a fire alarm is erroneously notified. SOLUTION: When a sensor control part 42 determines that the probability of a fire breakout is first probability or more, the sensor control part outputs a fire preliminary signal, and when determining that the probability of the fire breakout is second probability or more, the sensor control part outputs a fire decision signal. A control part 1 receiving the fire preliminary signal from a fire detecting part 4 makes a radio transmitting and receiving part 2 transmit a radio signal including a start-up message, and a control part 1 of another fire alarm device TR receiving the start-up message makes the radio transmitting and receiving part 2 constantly receivable without ringing alarm sound from an alarming part 5. Therefore, when a radio signal including a fire alarm message is transmitted at a stage where the probability of a fire breakout is high, the another fire alarm device TR can immediately receive the radio signal so as to be able to shorten a time when a plurality of fire alarm devices TR interlockingly notify a fire alarm. COPYRIGHT: (C)2013,JPO&INPIT |
