DCN-DISBDD buttons for dual use discussion Units replace the single microphone button on a discussion unit when used in dual delegate mode.

当讨论机设置成双代表机时，需用DCN - DISBDD双代表按钮替换原装的单个话筒按钮。

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Movie recording can be started with a single press of the dedicated "Movie Recording Button" and records high-quality sound using the built-in stereo microphone.

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