For reference only (4 photos)
The communication interface in the security monitoring system is mainly for the input and output of video and audio. Therefore, the communication interfaces generally have the following types: RS-232, RS-485, general network interfaces, which can support various networking environments of PSTN, ISDN and LAN, have a USB2.0 super high-speed data interface, and connect to a computer to backup important image data. , Optional with progressive scan VGA output interface, etc.