... Support IE and client, remote parameter settings, preview, download video data Remote reviewing 4 channel network DVRUse the standard H.264 ... up less bandwidth resources GUI OSD interface,USB Mouse controller,more intuitive,easier to use for user-friendly Support D1,HD1,CIF ... of the PTZ control Supports Multiple backup mode:USB flash drive,USB hard disk,USB CD/RM and network backup Support pre-alarm ...