snippet: The CT-NP313-IR-30X IR Network Speed Dome also features a wide range of functions, including intrusion detection, line crossing detection, audio exception detection, motion detection and video tampering detection, benefiting users with improvement on security efficiency, more importantly, with key events/objects being recorded for further forensic needs. This series of cameras can be widely used for wide ranges of high-definition, such as the rivers, forests, roads, railways, airports, ports, squares, parks, scenic spots, stations and large venues, etc.

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