| 摘要 |
A battery as for a miniature communication device is retained within a hollow knurled knob captivated within the device housing. The side of the knob projects from the housing to provide thumb control of the switch, and has an open side portion to provide battery access. Spring contacts access the battery terminals through apertures in the knob. Function indicia are provided on the knob and are visible on the projecting portion as appropriate.
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