定时录像，自动循环录像，断电后来电自动恢复功能，视频丢失报警功能。
Timing record, auto circulate record. , and auto resume after breaking off electronic. Give an alarm when video frequency losing.
定时录像，自动循环录像，断电后来电自动恢复功能，视频丢失报警功能。
Timing record, auto circulate record. , and auto resume after breaking off electronic. Give an alarm when video frequency losing.
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