| 摘要 |
A remote control unit includes a housing, at least one pushbutton, a signal transmitter and a detection circuit. The pushbutton is disposed on the housing. The signal transmitter is mounted rotatably on the housing and capable of being switched between first and second positions. The detection circuit is coupled electrically to the pushbutton and the signal transmitter for generating a control signal upon detecting activation of the pushbutton. The signal transmitter transmits a first function signal when the signal transmitter is disposed at the first position and a second function signal different from the first function signal when the signal transmitter is disposed at the second position.
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