| 摘要 |
PROBLEM TO BE SOLVED: To eliminate a problem wherein even if a thermal alarm and a gas leakage alarm go off in a kitchen, a water heating room and the like, the alarming sound is not heard because they are placed in a far distance. SOLUTION: A sound collecting microphone is mounted on a wall and the like which has nothing to block sound to detect alarming sound. A detection signal of it is transferred to required positions at remote places by radio or through a cable and alarm goes off by lighting a lamp and sounding a chime. COPYRIGHT: (C)2005,JPO&NCIPI
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