Key Specifications/Special Features: Imager sensor: 1/4" Sony CCD System of signal: PAL: 752 (H) x 582 (V) NTSC: 768 (V) x 494 (V) Resolution: 480TV Lines Lens: 220x zoom lens, 22x optical zoom 10x digital zoom Built-in RS-485 P-D, P-P available S/N ratio: 52dBB LC Min. illumination: 0.05Lux/F1.2 Auto gain control: ON/OFF Auto electronic shutter: 1/50(1/60)-1/100