她家门前被安装了一个聚光灯和一个安全摄像头，不断有便衣在她家门口走来晃去。
A security camera and floodlights appeared outside her front door, supplementing the plain-clothes men who loitered there.
门口可视对讲，门岗等设置摄像头和视频采集系统，在控制中心上实现可视门禁；
Visual Talk outdoor, which could realize guarding mechanism in the control center by pickup camera and video collection system;
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