CCD Type Sony1/3" Sony1/4" Pixels PAL 500H?82V NTSC 510H?92V Scanning System PAL/NTSC Horizontal Resolution 420TVL Minimum Illumination 0Lux(IR ON) S/N Ratio >=48dB Video Output 1.0Vp-p/75 AGC Auto White Balance Auto Backlight Compensation Auto Exposure Mode EE Electronic Shuttem 1/50(1/60) to 1/100000sec Gamma Correction 0.45 Sync. System Internal Synchronization IR view distance 20-25m Lens 3.6mm/6mm Power Supply DC12V+-5% Operation Temperature -20 degree--50 degree