¡¤Could control video matrix,high speed dome and integrated camera directly ¡¤RS-485 control bus can control different address and rate front devices ¡¤Standard communication distance is as long as 1200m (0.5mm twisted-pair) ¡¤Uplink port can provide links to maximum 8 auxiliary keyboard controller ¡¤Standard RS-485 I/O ports are all lightening-proof, strong for interference ¡¤Used long-life computer keys ¡¤Built-in multi-protocol available for different manufacturers'speed domes ¡¤Could control maximum 1024 front devices ¡¤Multi-lines of English LCD liquid display