VVS-7022 The camera with dual CCD hare following dvantages 1:No color shift on color model 2:Sharp picture at night vision,as it was done with Sony Ex-view CCD 3:Longer usage lift,as these 2 CCDs work by turn. Model VVS-7022 Signal System PAL/NTSC Image Sensor 1/4" SONY Super HAD CCD Picture Element PAL:752(H)X582(V);NTSC:768(H)X494(V) Horizontal Resolution 480 TVL Lens F=3.9~85.8mm 22XLens Minimum Illumination 0.5LUX / F1.2 S/N Ratio More than 52dB Back Light Compensation Auto Auto Gain Control Auto Speed focal mode Speed focal mode < 0.8s Auto Electreonic Shutter 1/50(1/60)~1/100.000(Sec) Video Output Composite Video Output(1Vp-p 75ohm Terminated) Focus Mode Auto Operation Temperature -20oC to +50oC Supplied Power DC 12V (+/-10%)