Modified MJPEG Compression Format 1. 8-ch video inputs, Group A to B switch 2. High quality color video at 30/25 fps 3. recording/playback quad mode 4. Optional: NTSC and PAL system 5. Recording mode: Continuous, Motion Detection, Sensor activated 6. Removable HDD, supports up to 250GB HDD 7. Display resolution: NTSC 720x480; PAL 720x576 8. Recording resolution: NTSC 320x112, 640x224/PAL 320x136, 640x272 9. Recording frame rate: NTSC max. 30 fps (quad) /PAL max. 25 fps (quad) 10. PC Backup via USB 2.0 port 11. With video loss alarm function 12. With power recovery auto-recording function 13. IR remote control