1, CF-070N Dual microphone array pickups, professional environment sound acquisition, assembly of imported kits. 2, panasonic professional recording interviews with dual microphones, within 100 meters of the original ecological quality. 3, built-in high-fidelity dynamic Harry Nyquist speech processing, automatically improve voice quality. 4, the maximum 18dB adaptive noise reduction capability, dual microphone array reduces background and ambient noise. 5, pre-AEC super tail elimination technology to enhance the ability to pickup fidelity. 6, automatically adjust the sound and the instant impact of high intensity sound, reliable protection of the back-end audio monitoring equipment. 7, zinc alloy anodized aluminum shell, light weight, elegant appearance. 8, surface blasting coating, ultra-thin dual-network design, easy to install and use. 9, super line audio transmission technology, using ordinary twisted pair two kilometers without distortion. 10, -30 ℃ ~ 80 ℃ operating temperature range. 11. Industrial SOT23-6 reverse polarity power protection. 12, integrated voice processing chip integration expertise, can connect with active speakers, computer, hard disk recorders, network cameras. 13, apply to the Inland Revenue Department pickups, banking, public security, supervision, justice, security, and other departments of the window audio monitoring. Performance Indicators Project pickups pickup performance Model CF-070N Dual microphone array microphone pickup range 100 m2 dual microphone directivity characteristics Panasonic gilded capacitance MIC omnidirectional sensitivity -40 dB (10.0 mV e 1V at 1 Pa) SNR 85 dB (1 kHz at 1 Pa) distortion A ≧ 0.25% (78dB sound pressure, A-weighted) Distortion B ≧ 1.2% (100dB sound pressure, A-weighted) maximum sound pressure 126dB sound pressure (1 kHz ≤ 5% THD, A-weighted .) Frequency Response 20Hz ~ 20kHz (70dB sound pressure, A-weighted) Audio output 2.5 Vpp / 90dB sound pressure (A-weighted) signal processing Harry Nyquist fidelity dynamic voice processing dynamic range 72 dB (1kHz at Max dB SPL) output impedance of 200 to 1000 ohms unbalanced (customizable other impedance) Audio output value 2Vpp / 120dB sound pressure (adjustable) protection circuit connected to the power supply fault protection connection three: the power cord positive (red), audio positive (white), public ground black (Audio Power negative) signal transmission distance 2000 meters (electromagnetic complex environment with a shielded cable) linear regulated power supply voltage DC 9V-15V (recommended to use 12V) supply current 49 mA Operating ambient temperature -30 ℃ ~ 80 ℃ electromagnetic Shell material compatibility in line with GB20815-2006 silver zinc alloy mounting bracket screws distribution M5MM Dimensions 50mm * 30mm Weight 55 g