Video Input: 4 Channels Video Output: 4 Channels Audio Input: 1 Channels Audio Output: 1 Channels Recording Rate: 30 fps (NTSC), 25 fps (PAL) Display Rate: 30 fps (NTSC), 25 fps (PAL) Video Resolution: 704x576,352x288(PAL) 640x480,320x240(NTSC) Compression Format: MPEG4 Compression Type: Software Compression Chipset: Operation System: Intel P4 Celeron processor，minimum 1700MHz Software Language: English, Chinese NetWork Type: TCP/IP Remote Type: Support Internet Explorer Web Browser Backup Type: HDD, USB Disk, ZIP, CD-R/W TV Out: Yes Single System Support: 1 PCS Card Dimensions: MM Card Weight: 0 KG Feature: 4 channels video input in one card, the maximum display/recording rate is 25 fps under PAL format, and 30 fps under NTSC format. 1/4/6/8/13/16 screen display modes are available. Multi alarm triggering method: sensor, motion, video loss, and HDD space shortage. Support schedule recording mode, recycling recording method available. MPEG4 video compression format. 5 level recording quality options available, and the recording frame rate range from 1 to 30 fps adjustable for each channel. Support multi-channel playback, searching by time/date and recording events, images can be zoom/capture/save/print/backup. Support remote surveillance and PTZ control through web browser, support dynamic domain name Remote playback function. Configurable auto reboot function for preventing PC deadlock. Support Auto-Mail, Emap and smart phone