The Xenon  IP-SD8907 a dual-codec network speed dome camera with a polycarbonate-viewing cover against possible vandalism, provides high quality video and audio over the IP networking. With a 10X optical zoom lens and the precise, wide pan/tilt movement (continuous 720 pan and 110 tilt), you can easily zoom in on the critical areas and patrol among 20 preset locations. It also features a great many of powerful surveillance functions such as the intelligent motion detection, two-way audio, digital I/O for various surveillance applications, pre/post alarm snapshots and so on.