Main Model: BO-633B: 420 TVL, Color1/4" Sony CCD, 0Lux BO-663B: 420 TVL, Color1/4" Sharp CCD, 0Lux Main Features: Scanning System:PAL/NTSC Mini Illumination:0Lux(IR ON) Video Output:1.0 Vp-p composite, 75o S/N Ratio:more than 48dB (AGC OFF) Gamma Characteristic:0.45 Sync.System:Internal Synchronization IR View Distance :15m Lens:6mm(Standard) Electronic Shutter:PAL 1/50-1/100,000Sec; NTSC 1/60-1/100,000Sec White Balance: Auto Power Supply:DC12V?% Operation Temperature:-20--50degree