DVR 4CH, H.264 compression, support SATA HardDisk, Mouse, with VGA, USB, network, RS485 PTZ ... controll, IE browse 4CH DVR H.264 compression, dvr recorder support SATA 4CH, M-JPEG compression, support SATA HardDisk, USB*NTSC:30FPS ... PAL:25FPS*4ch separate video display and compression, video simultaneouslyNO Audio*Recording bitstream/frame unadjustable;NO R485Language: 16 ...