1.The LCD shows microphone ON/OFF condition and control dynamic level and   volume.
    2.Built-in hi-fi speaker 8 Ω 2 w Ф 60 mm, for conference room amplification   and play the background music, electronic switch control volume.
    3.Built-in high fidelity capacitor sound head, its sound quality is good   and low noise,it has strong pickup distance.
    4.The annular red indicator lamp can show the working state on   microphone.
    5.The chairman unit can turn down the delegate for anytime by priority   button.
    6.The unit have2.1M/8P Shielding wire, which greatly reduces the   interference of electromagnetic wave to wire
    7.The speaking model:FIFO/LIMIT/FREE.