... modes set the button press: " MODE", “SET", ”ENTER". 3, TEL conference input jack: Talking by phone. 4, Power: 60W 5, Standard ... Frequency response: 60HZ--15KHZ 5, Sensitivity: -47dB+_2dB 6, The MIC distance: 20-120mm The unit Representaative: 1, All systems with ... Frequency response: 60Hz-15KHz 4, Sensitivity: -47dB+_2dB 5, The MIC distance: 20-120mm We are manufacturer, professinal microphones. 1, 1 ...