4CH USB DVR, 2CH audio, the maximum display/recording rate is 25 fps (PAL ), 30 fps (NTSC), Video Resolution 704x576, 352x288(PAL) 640x480, 320x240(NTSC) 1 .4channels video input , the maximum display/recording rate is 25 fps (PAL ),30 fps (NTSC) 2.1/4/6 /8/13/16 screen display modes are available. 3.Multi alarm triggering method: sensor, motion, video loss, and HDD space shortage. 4.Support schedule recording mode, recycling recording method available. 5.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. 6.Support multi-channel playback, searching by time/date and recording events, images can be zoom/capture/save/print/backup . 7.Support remote surveillance and PTZ control through web browser, support dynamic domain name 8.Remote playback function. 9.Configurable auto reboot function for preventing PC deadlock. 10.Support Auto-Mail, Emap and smart phone Specification Input Type RCA Video Input 4CH Audio Input 2Ch Audio on board, 1 Ch PC Audio Video Output 1 Ch VGA Video Output Display Rate 25 fps (PAL), 30fps (NTSC) Recording Rate Max 25 fps (PAL), 30fps (NTSC) Compression Format MPEG4 Video Resolution 704x576,352x288(PAL) 640x480,320x240(NTSC) Recorder Media HDD, USB Disk, ZIP, CD-R/W Record Mode Motion/Schedule/Manual Network TCP/IP PTZ Protocol Configurable, Remote Control Capability Remote Software Support Internet Explorer Web Browser System requirements CPU Intel P4 Celeron processor , minimum 1700MHz Motherboard Intel 845/865/915 series HDD 80G minimum RAM 256M minimum VGA GeForce2 , GeForce4 ,FX5200 ,ATI Rage128 OS Windows 2000(SP4 above)/2003(SP1 above)/XP(SP2 above)/Vista DirectX 9.0 USB 2.0