1. Support IVS 2. DVR,NVR and HVR, 3 in 1. 3. ... .Powerful network software:built-in web server,multi-DVR client &SNS Networking access for remote live viewing ... realize the zero-delay between playback channels15. Support IVS(intelligent video analysis system),like perimeter detection,items care, ... flowmeter, abnormal video signal diagnosis16. DVR,NVR and HVR, 3 in 1.17. Support ...