... channels playback simultaneously DVR,HVR,NVR,3 in1 CCTV HD-SDI DVR with 1ch HD SDI & 8ch D1 240fps Digital Video Recorder smart phone remote ... (accurate to second)Storage &BackupSpace OccupationVideo: 1080p 80G/day/ch, 720p 26G/day/ch, 960H 24G/day/ch, D1 16~20G ... ). Detect something was dropped from the motor bike.(2). The car stopped in the forbidden parking area on the street.3 ...