MAXHUB Mobile Capture NC Mic CM30 Features Advanced 8-Microphone Array: Utilizes an 8-element circular array design, Integrated with ANS (Automatic Noise Suppression), AEC (Acoustic Echo Cancellation), and AGC (Automatic Gain Control) algorithms for crystal-clear audio capture Digital Audio Transmission: Supports digital audio transmission technology to eliminate line interference. Ensures high-fidelity sound through digital signal transfer Convenient Upgrading: Firmware updates are simple via the USB Type-C port or Ethernet connection. Keeps the microphone up-to-date with the latest features Effortless Cascading: Easily connect multiple CM30 microphones via Cat5e cables. Provides comprehensive coverage in larger classrooms or lecture halls Specifications Microphone Quantity: 8-array microphone Voice Pickup Range: Pickup radius ≥ 8 m Type: Omnidirectional microphone Frequency Range: 20 Hz ~ 20 kHz Signal-to-Noise Ratio: ≥ 68 dB Sound Pressure Level: ≥ 130 dB SPL (10%THD@1Khz) Audio Algorithm Automatic gain control Automatic mixing Automatic noise reduction Anti-reverberation Automatic echo cancellation Howling cancellation Multi-microphone cascade Physical Parameters Dimension (ØD × T): 138.5 × 27.3 mm Shipping Dimension (L × W × H): 852 × 276 × 68 mm Net Weight: 0.45 Kg Gross Weight: 1.4 Kg Environmental Conditions Operating Temperature: 0°C ~ 40°C Storage Temperature: -20°C ~ 60°C Operating Humidity: 10% ~ 90% RH Storage Humidity: 10% ~ 90% RH Altitude: Below 5000 meters I/O Port DMIC ×2 USB Type-C (for upgrade and debug) ×1 Reset ×1 Accessory Suspension Rod Bracket ×2 Bracket Installation Parts ×2 Quick Start Guide ×1 Electrical Parameters Power Supply: DC-48V/ 100mA Power Consumption: 4W