HW-104 DVR CARD Input type: no Video input:1-4 cams Recording rate:30 fps(ntsc), 25fps(pal) Display rate:30 fps(ntsc), 25fps(pal) Video resolution:352*288; 768*288; 768*576 Compression format: mpeg-4 File size:2-4kb Netwok: lan, cable modem, isdn, ptsn Ptz: rs323(pan/tilt/zoom/iris) Others: one system support 1-4 cards, 16 channels video 1pc/box