Other features include pre - and post-alarm image buffering, video motion detection, and two-way audio support.

其他功能包括前后警报图像缓冲，视频动态侦测和双向音频支持。

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Other features include pre - and post-alarm image buffering, video motion detection, and two-way audio support.

其他功能包括前后警报图像缓冲，视频动态侦测和双向音频支持。

youdao