This professional dome camera features 480 lines of resolution with a 4~9mm varifocal auto iris lens. It built-in On/Off switches for Back Light Compensation and Auto Gain Control. This camera also built-in 1/3" Sony Super HAD CCD sensor for high quality images and provides long life and high reliability. This camera offers ecellent image quality with low lag and high burn resistance, and is not subject to distorions from magnetic fields. Highly resistance to shock and vibration, and easy to install.