multiplexer, which could be up to 255 ID.
Pan/tilt control
User can control fixed speed or variable speed pan/tilt by joystick, and there is special-purpose button can operate pan/tilt auto scan , horizontal line scan, preset, tour, etc.
Lens control
The button can control electrified lens functions, iris (open-close), focus (near-far), zoom (wide-Tele).
DVR, multiplexer control function
With special buttons to operate DVR record, play or multi-window etc. function.
Addition indication
Two LED to indicate present communication, power supply etc.