Parameter specifications Working voltage DC24V (supplied by the host) Input and output 8P-DIN T-line Input heart-shaped directional polarizable body Sensitivity -46 dBV/Pa Frequency response 20Hz~20KHz Input impedance 2 k Ω Directional 0 °/180 °>20 dB (1 kHz) Equivalent noise 20 dBA (SPL) Maximum sound pressure level of microphone 125 dB (THD<3%) Signal to noise ratio>80dB Channel crosstalk>80dB Total harmonic distortion<0.05% Display screen 3.5-inch touch screen External dimensions (excluding microphone rod) 188 × 128 × 52mm Weight 1.0kg Color Grey Black Installation method: desktop style