| 摘要 |
The present invention refers to an electronic device comprising a box-type housing having a square frame-type frame member including open portions on the upper and lower surfaces thereof, and covers covering the open portions of the frame member, and a printed circuit board disposed in the housing having a circuit pattern, wherein one of covers has a hole made in a position opposed to printed circuit board circuit pattern, in which one of the covers has an opening opposite the printed circuit board, and in which the the printed circuit board and the covers comprise an aperture made through the housing in a straight line in an ascending and descending direction of the housing, respectively.
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