This Ball Gimbal Type Vandal Dome uses The Sony Super High Resolution 600 TVL Super HAD CCD with True Day / Night Filter Change Technology for clear natural Colour in daylight switching to Mono at night with the addition of Digital Noise Reduction (DNR). 45 IR LEDs are activated by a CDS Sensor for Day / Night switching. Illumination area around 25~30m externally with a wide range 3.5~16mm Varifocal Day / Night Lens that covers a more flexible viewing angle than most other lenses and can be used for both wide angle and close up installation requirements. Simple and quick installation Vertically or Horizontally due to unique Ball Gimbal Multi Axis design with 2 screw easy lens Zoom and Focus adjustment. IP66 rated for external use. Ideal for the external use where the Highest Quality Ball Type Vandal Dome camera is required.