Image Sensor: 1/3" Sony CCD Resolution: 480TV Lines Effective Pixels: PAL: 750(H)x582(V); NTSC: 768(H)x494(V) Min. illumination: 0Lux ( infrared lamps turn on ) Signal System: PAL/NTSC Number of Infrared Lamps: 36 Wavelength of the infrared light: 850 nm Infrared lamps opening in the night and turning off in the evening automatically Synchronizain System: internal synchronization S/N Ratio: >52db Gamma Characterisitc: 0.45 Auto Electric Shutter: 1/5091/60) - 1/100,000 sec. Video output: 1.0Vp - p75 ohms. Negative