| 摘要 |
A socket device includes a housing having a passage formed in a driving shank, a coupler having a coupling member engaged into the housing for receiving one or more batteries, a circuit board disposed in the housing and having a conductor member electrically coupled to the coupler and the case electrode of the battery and coupled to a light member, and an operating device disposed in the housing for selectively coupling the central electrode of the battery to the other conductor member in order to selectively energize the light member, and for allowing the light member to be operated by the users.
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