Model No.: SF-278E CCD type: color Sony 1/4-inch CCD Scanning system: PAL/NTSC Pixels: PAL: 512H x 582V NTSC: 512H x 492V Horizontal resolution: 420TVL Minimum illumination: 0.5Lux S/N ratio: ≥ 48dB Video output: 1.0Vp-p/75Ω Auto gain control: auto White balance: on/off switchable Backlight compensation: on/off switchable Exposure mode: auto Electronic shutter: 1/50(1/60) to 1/1,00,000 seconds Gamma correction: 0.45 Synchronization system: internal synchronization Auto iris control: yes Lens: 27x zoom, 3.9 to 89.5mm Focus mode: auto/manual optional Protocol: PELCO D and P Baud rate: 2400/9600 Power supply: DC12V±5% Operation temperature: -10 to 50 degrees Celsius