48CH Video input; 1CH master & slave monitor outputAudio input: 16CH; Audio output: 1CH,16CH alarm inputVideo Resolution: 720×240(NTSC); 720×288(PAL)Operation: Frontpanel, Remote controller, Mouse, NetworkIt support 16CH playback simultaneouslySupport Mobile phone DDNS function.Backup mode: USB2.0, CD-ROM WITH HDMI OUTPUT(1920*1080)IE browse and PC view support; VGA function (optional)PTZ control; 6 any size SATA port HD supportDimension: 483*430*175.5 mm