SPT Security INS-D1200W Day/Night Vision Dome camera is constructed of die-cast aluminum weatherproof housing. It is designed with 1/3" color CMOS sensor, 2.8mm~12mm Varifocal lens and 1000 lines of resolution. It has 36 IR illuminators, which provides illumination up to 100ft. in little or no light. 3 Axis design. Other features include automatic white balance, automatic backlight compensation, auto gain control and wide dynamic range.