*Latest digital design.
*With automatic video‐tracking function/voting function.
*With microphone ,speaking button and indicator lamp that can show and control the state of speech
*Whole plastic microphone shell.
*With a microphone unit connecting cable.
*Built‐in speaker,equiped LCD screen show working state.
*Electronic key for adjust speaking volume and speaker volume.
*The power for units is supplied by the master controller at 9v safe voltage.
*Hand‐in‐hand connection method.
*With a microphone unit connecting cable 2.1m, 8P core line, convenient installation can increase efficiency.