1.It has voting,video tracking,electing ,sign-in and discussion functions.
    2.It offer three groups of terminal interconnecting interface for   microphone connection.
    3.It can connect 60 units microphone in one system, and it can increase to   512 units microphone with the expander.
    4.The maximum number of microphones is 12.
    5.Ihe work model :FIFO/LIMIT/FREE/CHAIRMAN FIRST.