2 CH digital video server H.264,support WIFI built-in web server motion detection,provide SDK interface dual stream function ModelST-NT200HS-A/ST-NT200HSW-AVideo Source SystemPAL/NTSCSD Card StoreSupport SD card storageVideo Compression FormatH.264Bit Stream8Kbps ~ 3Mbps, CBR/VBR adjustablePeripheral PortOne 10/100Mbit Ethernet Interface(RJ45 Interface)One RS485 interfaceNetwork ProtocolTCP/IP, ...