... RS485 PTZ control Mouse, Remote control Model No.: JR-10008DC 8CH DVRFeatures:Video: 4CH Input,2CH OutputAudio: 4CH Input,1CH Output Alarm ... HI3515, Pure two-stream H.264 compression, stream up to 35% lower than tradition DVR(2) Full real time record, real time playback,HQ (3)Support VGA ... Voice talk back (6)Upgrade by USB,USB Backup ,Move HDD backup,USB-rw backup ,web backup(7)Multiplex Operation,Live ...