A superb telephoto lens is used with an 18x, 22x, 23x or 36x optical zoom plus a digital zoom of 10x or 12x. Images can be accessed within a second using the programmable presets. The day/night filter switching and the superior performance in low illumination make our dome the best choice for surveillance. Each dome is produced with our own molding. It also supports Day & Night function, and the whole-day-and-field monitoring. It made by high strength double aluminum alloy as its housing, it has heat-resistant and corrosionproof abilities. It adopts IP66
weatherproof shield as well.