This dome video camera delivers high resolution and low lux performance, but with a added plus-- a built-in 2.8MM-5.8MM varifocal zoom lens. This gives you flexibility to handle almost any typical installation without worrying about lenses. Razor sharp 480 line resolution and 1 lux low light rating will give you stunning clarity. Switchable automatic backlight control and auto gain control combined with a digital signal processing circuit will handle nearly any lighting condition with ease. The precision lens has manual focus and zoom adjustments, with field of view ranging from 35 to 70 degrees. Pan and tilt angles are also easily adjustable, manually. Actual dome is 3.85 in diameter and overall size is 5.87 X 3.05 high. Runs on 12 volts DC, 225 milliamps. Easy to install, with mounting holes concealed beneath the dome. Comes with instructions, pre-installed plug and play video cables, 1 year warranty and 30 day money-back satisfaction guarantee.