DVR 4CH, H.264 compression, support SATA HardDisk, Mouse, with VGA, USB, network, RS485 PTZ ... browse 4CH DVR H.264 compression, dvr recorder support SATA4CH, M-JPEG compression, support SATA HardDisk, USB*NTSC:30FPS PAL:25FPS* ... *Recording bitstream/frame unadjustable;NO R485Language: 16 kinds of language*support 1 pieces of 500G SATA HDDPackage Weight: 1.9kgSystemModelMHK-7004VMain ProcessorHigh ...