| 摘要 |
<P>PROBLEM TO BE SOLVED: To emit/display an alarm based on detection of abnormality caused in a house not only at the house being a source of the alarm but at the other houses which are previously and individually decided. <P>SOLUTION: CPU 10 of a security intercom 4b being the source of the alarm, which is connected to a security sensor detecting abnormality, transmits multiplex transmission signals transmitted to an intercom controller 7 through a multiplex transmission line L11 to CPUs 10 (a plurality of 10) of security intercoms 4a and 4c (except for the source of the alarm). CPUs 10 of the security intercoms 4a and 4c collate an alarm source address contained in the multiplex transmission signal from a security intercom 4b being the source of the alarm with an alarm source address which is previously stored in setting storage parts 15 (a plurality of 15) based on a specified operation of operation parts 14 (a plurality of 14), and emit/display the alarm only when the addresses are matched. <P>COPYRIGHT: (C)2004,JPO |
