1, camera: used to shoot video images, which can be divided into fixed, cloud desktop, portable and other types.
2. Surveillance video recorder: It is used to store and manage the video data shot by surveillance cameras, and it can be divided into two types: network video recorder and digital video recorder.
3. Access control system: used to control the opening and closing of entrances and exits, which can be realized by swiping cards, fingerprinting and face recognition.
4. Alarm: It is used to detect and alarm abnormal events, and it is divided into acousto-optic alarm, vibration alarm, smoke alarm and other types.
5. Security Center: used to monitor and manage the whole security system, which can integrate various security devices and provide functions such as data analysis and alarm processing.