Toshiba Surveillix Dome™ CCTV Dome Cameras take the hassle out of installation. The IKDP20A is exceptionally easy to install and even easier to integrate with simple electrical connections, and in-ceiling or pendant mounts. The cameras offer high-resolution (480 TV lines) capture, auto focus with manual over-ride, 18x optical/12x digital zoom, 360 degree pan rotation, plus they are fully programmable with RS-422 connectivity to link up to 255 cameras on one systems. They're also Digital Recorder Ready™ with optimal 50dB signal-to-noise.