CS - 600 - c/D/on behalf of the unit, chairman of the technical parameters Sensor types: capacitor Pointing features: super cardioid single point Frequency response: 70 hz - 16000 hz Spirit sensitivity: - 47 + / - 3 db @ 1 KHZ The input voltage: 18 v (host unit power supply) The minimum output impedance: 1 k Ω Total distortion, < 3% maximum sound pressure: 124 db The equivalent input noise sound pressure: 24 db (A) Signal to noise ratio: 68 db (A) Data link: 2.1 m 8 p shielded wire Mobile phone, design of RF radio frequency interference resistance, accord with modern meeting environmental requirements , the host can be selected according to the requirements of using CS - 6000 - b or CS - 6000 - m