| 摘要 |
PROBLEM TO BE SOLVED: To reduce the cost by unnecessitating an alarm switch. SOLUTION: This device is provided with a main body 2 of case, a cover member 4 mounted on this main body of case so as to be opened/closed and first and second circuit boards 6 and 7 respectively arranged on the said main body of case and cover member and connectors 9 and 10 connected to the first and second circuit boards are respectively fixed on the main body 2 of case and the cover member 4 and detached/attached corresponding to opening/ closing of the main body of case and the cover member.
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