Production characteristic: SONY/SHARP CCD is optional, 420/480/520 is optional, 23IR LED, IR Range 20m, 3.6mm Lens, Cable out of Bracket Design, IR Auto-open by CDS Control in Low Lux Technical Parameter Model S3M S4M H3M H4M Image Sensor 1/3"SONY CCD 1/4"SONY CCD 1/3"SHARP CCD 1/4"SHARP CCD Signal System PAL/NTSC Horizontal System 420TVL Effective Pixels H ????????AL:500????????NTSC:510???????? Shuttle Speed PAL=1/50 ~1/100,000 secNTSC=1/60 ~1/100,000 sec Mini Illumination 0.1 Lux S/N Ratio > 48dBAuto Gain Off Gamma 0.45 Lens 3.6mm Blacklight Compensation Auto Video Output 1.0VP-P,75????????br />White Blance Auto Power DC12V Current 100mA Operating Temperature -10 ~ 50relative humidity:the most 95%