| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic circuit housing casing including a tamper switch in a magnetic force detection system for reliably detecting abnormality in a casing without using high-performance sensors, such as a roll-over detection sensor and a vibration detection sensor, together. SOLUTION: The electronic circuit housing casing 1 comprises: a base unit 10 stuck to a wall surface, or the like by a fixing means, such as a mount screw; and a case unit 20 detachably installed to the base unit by a prescribed attaching means. The electronic circuit housing casing 1 includes a tampering detection function of detecting removal when at least one of the base unit and the case unit is removed from the installation position and outputting a prescribed warning signal. In the electronic circuit housing casing 1, the base unit includes a magnetic force generation unit 11 that includes structure easily separable from a body of the base unit and is held firmly to a wall surface, or the like by using a fixing means, such as a mount screw, and the case unit includes a magnetic force detection unit 22 provided adjacent to the magnetic force generation unit. COPYRIGHT: (C)2011,JPO&INPIT
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