| 摘要 |
PROBLEM TO BE SOLVED: To improve safety by issuing a fire alarm even in a security system when a fire occurs. SOLUTION: When receiving a response message from all slave stations TR2, a control part 1 of a master station TR1 causes a radio transmission/reception part 2 to transmit a radio signal including a fire alarm message to a security master unit 10. The security master unit 10 issues a fire alarm by sound or rays of light based on a fire alarm message received from the master station TR1. Therefore, when a fire occurs, fire alarm is issued by all fire alarms TR, and also fire alarm is issued by the security master unit 10 of a security system which has received the fire alarm message. Thus, it is possible to improve safety by increasing opportunities for a user to sense a fire alarm (hear a warning sound). COPYRIGHT: (C)2010,JPO&INPIT
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