1, CF-040H-proof box 86 pickups, professional environment sound acquisition, assembly of imported kits. 2, panasonic professional recording interviews within the first 80 meters pointing tone fidelity, high sensitivity, high bandwidth, no noise. 3, built-in high-fidelity dynamic Harry Nyquist speech processing, automatically improve voice quality. 4, the maximum 20dB adaptive noise reduction capabilities, and reduce background noise environment. 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, using 86 GB panel size design, easy to install and use. 9, long 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-040H-proof box 86 pickup microphone pickup range of 80 square meters gilt capacitance MIC point features Panasonic omnidirectional sensitivity -46 dB (10.0 mV e 1V at 1 Pa) 70 dB SNR (1 kHz at 1 Pa) distortion A ≧ 0.2% (74dB sound pressure, A-weighted) Distortion B ≧ 1.1% (110dB sound pressure, A-weighted) maximum sound pressure 110dB 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 76 dB (1kHz at Max dB SPL) Output Impedance 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 places Black (Audio Power negative) signal transmission distance of 2000 meters compatible (complex electromagnetic environment with a shielded cable) linear regulated power supply voltage DC 9V-15V (recommended to use 12V) supply current 50 mA Operating ambient temperature -30 ℃ ~ 80 ℃ electromagnetic compliance with GB20815-2006 shell material of zinc alloy silver mounting box 86 GB General Dimensions 86mm * 86mm * 5mm Weight 50 g