? Built-in 24 points self restraint return function, close to CD sound quality

? Discussing and display integration design, smart and attractive.

? All digital audio transfer technique, point to point connection mode, remote transmission won’t influence on sound quality. Distance between two units could reach at 150m

? 5 inch TFT 640(H) x 480(V) capacitance touch screen

? Has “Distribution boxes hand by hand” and “Hand by hand in ring” connections.

? Support”PnP”

? Each unit has arbitrary distribution ID address, convenience for installation and avioding ID address repeating

? Built-in channel selector, can transmit 8/16/32/64 language and display CH Number

? Stereo earphone output, could adjust volume.

? 5 work modes Limited mode FIFO mode Apply mode Voice activating mode Free discussion mode

? Send/receive message function

? Cooperated with video controller and camera, have video tracing function.

? Chairman unit have Priority, could switch off all the speaking units.

? System support 150 chairman units, could specify one as chief chairman, carry out function as follow, ?

       Switch work mode

  ? Activate sign-in, voting

  ? Receive or reject application speech

  ? Switch off appointed MIC

  ? Switch off the earliest MIC

  ? Switch off all MIC

? In combination with the corresponding software modules, multiform voting can be implemented: ?

      Parliamentary: agree/oppose/abstain, Pass-rate setup

  ? Multi choice/Opinion poll:1/2/3/4/5

  ? Audience response/Rating:--/-/0/+/++, could setup content

  ? Score: 0--100, practically participant person as average fraction