| 摘要 |
PROBLEM TO BE SOLVED: To reduce time required for signal processing of a main body device by reducing the number of terminals which directly communicate with the main body device in a home security system having the main body device and a plurality of terminals for abnormality detection. SOLUTION: An abnormality detection group is constituted by the plurality of terminals 2-4, when a terminal 2 in the first order receives a signal from the main body device 7 in the abnormality detection group, the terminal 2 transmits an abnormality detection result of itself to a terminal 3 in the second order and the terminal 3 in the second order transmits an abnormality detection result of itself to a terminal 4 in the third order with the abnormality detection result of the terminal 2 in the first order. Then, the terminal 4 in the third order transmits an abnormality detection result of itself to the main body device 7 with the abnormality detection results of the terminals 2, 3 in the first order and the second order. COPYRIGHT: (C)2009,JPO&INPIT
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