Main Model: BO-216F: 420TVL, Color1/3" Sony CCD,0Lux BO-226F: 420 TVL, Color1/3" Sharp CCD,0Lux BO-236F: 420 TVL, Color1/4" Sony CCD, 0Lux BO-266F: 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:3.6mm(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