(If you still don't understand surveillance or are a friend who wants to understand, come here quickly? Provides the easiest tutorials to get started and get started, so that you will no longer be unfamiliar with video surveillance. Table of Contents: Monitoring Overview Introduction of Monitoring and Introduction of Monitoring System Components (monitoring, anti-theft, access control), it is also an important part of the security technology system. This is because the image itself has the attributes of being visible, recordable and informative; Seeing is believing. Therefore, it is the most effective means of alarm review, dynamic monitoring, process control and information recording. ......)