Specifications:- Video Compression H.264 Audio Compression MP3 Video Input/Output 1CH D1 Audio Input/Output 1CH Alarm Output 1CH Motion Detection Yes Web Server Internal Dynamic IP Address Support 2 level of Domain Name,easily realize ADSL dail. Signal System PAL/NTSC Code Flow 64 bps~8M bps Picture Snap Yes Local Record Yes Dynamic Test Area and Sensitivity is adjustable Alarm Backup FTP Alarm Pre-record 5'~30' Prolong Alarm Record 30~120 seconds Ethernet 10/100M IO Port Support PTZ Port RS485,Remote PTZ USB 2.0 Yes MAX Clients 10 at the same time