*Latest digital design.
*With automatic video‐tracking 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.
*With Chairman priority key;could shut all the delegate unit.
*The chairman unit can be placed in any position in loop.
*The chairman unit is unrestricted by the any function.
*The chairman unit quantity is unrestricted in the loop.
*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

Type: capacitance
Polar pattern: one direction
Frequency response: 50Hz‐1700Hz
Sensitivity: ‐45±2dB@1KHz
Input voltage: DC 9V(powered by host)
Min input impedance: 1KΩ
S /N Ratio: 68dB(A)
Output connector: 8P terminal
Input and output wire: 2.1M 8P shielded line 
Mic length:435mm
Size:125*173*71mm
Weight:750g