DSPPA D7321 5G WiFi Conference Chairman Microphone with Voting Function

model D7321/D7322 The structure type Embedded Effective frequency range of gain limitation (± 3dB) Unit A to Unit B. 130Hz-14kHz Host to unit line 130Hz-14kHz Unit to host line output 50Hz-14kHz Speaker power 1.2W Static power consumption <3.2W Maximum power consumption: 4.5W Signal-to-noise ratio >81dB Crosstalk attenuation >80dB Harmonic distortion <1% Headphone output 9dBu, 8-32 Ω, 3.5mm Operating Power Supply(Battery Pack) DC5V is charged by Type-C port (more efficient charging in off state) Microphone type Elector cardiac capacitive type Sensitivity -30dBV/pa input resistance 2kΩ Equivalent noise 20dB(SPL) Maximum sound pressure level 125dB(THD<3%) Package dimensions: 485×280×120mm (with two in a bpx) Machine Dimensions (W × D × H) 175×133×46mm Gross weight 2.0kg Net weight 0.6kg