| 摘要 |
PROBLEM TO BE SOLVED: To provide an alarm with a new structure, easily installed on a comparatively soft wall face without a tool. SOLUTION: A device body is pivotally provided with an operation lever 16 with fixing needles 15 on the upper face, and has a recess 20 for housing the fixing needles 15, in the rear face. The fixing needles 15 are stored in the recess 20 when the operation lever 16 is not in use and separated from the upper face, and protrudes obliquely downward from the rear face when the operation lever 16 is in use and pressed onto the upper face. COPYRIGHT: (C)2011,JPO&INPIT
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