| 摘要 |
PROBLEM TO BE SOLVED: To enhance security and safety by appropriately and quickly sounding an alarm for any security trouble occurring in or outside a dwelling unit without being affected by the external wall of the dwelling unit, etc. SOLUTION: A master security machine 4 that receives trouble signals by radio from a security transmitter 3 located in the dwelling unit and a security receiver 6 that receives trouble signals by radio from a security transmitter 5 located outside the dwelling unit are connected to a cable L1 that connects a hallway slave machine 1 and a living-room master machine 2 to each other. In the event of a trouble in the dwelling unit, a living-room master machine sounds an alarm by the control of the master security machine that has detected the trouble, and a security alarm 7 capable of radio communication via the security receiver sounds an alarm by the control of the master security device. In the event of the security trouble outside the dwelling unit, the living-room master machine sounds an alarm by the control of the master security machine that has detected the trouble via the security receiver, and the security alarm 7 capable of radio communication sounds an alarm by the control of the master security machine. COPYRIGHT: (C)2006,JPO&NCIPI
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