Video frequency is very important in the security systems.Safeguards can view and record the circumstantialities by using the Video recording equipment that make cracking criminal cases more easy.

• 在安全防范系统中，视频图像占据着举足轻重的地位，通过监控可使警卫人员直接观看到被监控现场的实际情况，并可通过记录设备真实的记录某些特殊情况发生的现场，有利于案件的调查和侦破。