... 2,3G Mobile phone surveillance USB 2.0 dvr surveillance system with 8channel BNC,1 channel VGA ModelBSD-7204VBSD-7204AVSystemMain ProcessorHigh ... (D1)Motion DetectionZones:396(22*18)detection zones,Sensitivity:1-6(6 is highest)Trigger recording,PTZ movement,tour, ... movable HDD/SATA HDD/DVD-RWInterfaceVideo Input4 CHVideo Output1 BNC,1 VGAAudio Input1 CH4 CHAudio Output1 CHAlarm InputN/ARelay OutputN/ ...