We are manufacturer, professional conference microphones.
1, As for conference.
2, -47dB+_2dB.
3, 60Hz-15KHz.
4, 200ohm

We are manufacturer, professional conference microphones.

1, As for conference.

2, -47dB+_2dB

3,60HZ-15KHz.

4,200ohm.

Features:

Turned  mode:  Electric capacity

Direction:           heart

Sensitivity:        -47dB+_2dB

Frequency response:  60Hz-15KHz

Output  impedance:    200Ω

Output  power:            AC220V/50Hz

The master:

  it's set be limited function. control 3/6 unit representative.

  ( The  unit chairman as not by control it). connect  the Amplifier echo.

  chooice "LINE OUT" or" REC OUT" both jack. Background music within

   "LINE IN" or "PB-IN" jack  input.

 The unit  chairman:

   It's more than unit representative have  a red  press first. and  the press can out 

off all  units representative working microphone.

  The unit representative:

    Everyone ( or every both) within one  unit  representative, when it the microphone

working  as like the goose neck. and the light opening at once. the real space light opening at once also.etc...