Varifocal lens CCD camera ,CCTV , Surveillance equipment , Security camera, CCD camera, IR camera, weatherproof camera, day &night camera 1.good imaging: built with 520 TV line resolution and 1/3 SONY Super HAD CCD 2.easy for you to adjust the coverage of the camera : built with 3.5-8mm auto iris varifocal lens . 3.suit for outdoor and indoor installing: built with weatherproof housing day & night working: built with 36 IR lEDS 4.far distance watching: IR distance is around 35m 5.Note: You do not need to uninstall the housing to adjust the lens ,but adjust at the back of the camera by a screw.