The LK-CK100 converts switch and voltage signals into digital data and sends it over RS485. It can drive Pelco-D/Pelco-P PTZ heads and dome cameras - pan and tilt movement plus camera focus, zoom, iris, presets, lights and wipers - and it can equally be used to read digital and analogue voltage signals over RS485. Address and baud rate are set with DIP switches; joystick type and protocol are set from the PC software.