Product DescriptionH. 264 4CH ATM Stand Alone DVR VVS-DVR8104T 1.4ch, H. 264 compression, seperate access, with VGA, USB, network, RS485 PTZ controll, IE browse, 5.5' LCD screen 2. PHILIPS PNX 1701 Chip 3. Real time: 25f/s/ch, total 100f/s; 4.4ch A/V compression simutaneously; 5. Support TCP/IP protocal, USB backup; 6. Recording bitstream/frame adjustable; 7. Support recording and playback simultaneousely 8. Support RS485 PTZ controll, alarm function 9. Support 2 pices 300G hard disks. 10.185 x 200 x 280mm, about 5KGs;