... 9 / S and smooth operation 2.ccd video camera 3.English OSD menu is optional ccd video camera1 Stepless speed, humanized zoom ... 180 degrees/S most accurate positioningModel Number ST-IR8505 MINI HIGH SPEED DOME CAMERAImage sensor1/4 CCDSignal modePAL/NTSCHorizontal ... resolutionColor 420TVL,B/W600TVLMinimum illuminationColor to B/W,Color 0.05LUX,B/W 0.001LUXS/N ratio≥50dBBackligh ...