Integrated professional built-in preamplifier circuit, no adapter Transmission cable telephone lines, network twisted pair, shielded cable (complex electromagnetic environment with a shielded cable) Supply voltage DC DC 8V-20V (recommended to use 12V, greater than 500 m recommended 15V) Supply current 17 mA Operating temperature -13F ~ 158F Color Silver Shell Material Metal Dimensions L-2.5in ¡Á D-0.75in Weight 1.8 OZ You will need 12V Power Supply ( Not Include ) to Operate this Microphone. Microphone head has built-in lightning protection, power supply polarity reversal protection. ![]() Listening area 108 sqft - 375 sqft Audio transmission distance 3000 m Frequency response 20Hz ~ 20kHz Sensitivity -47dB Signal to Noise Ratio 50dB (40 dB sound source 1 meter) 30dB (10 meters 40 dB sources) 1KHz at 1 Pa Directivity omnidirectional Dynamic Range 80dB (1KHz at Max dB SPL) Maximum sound pressure 120dB SPL (1KHz, THD 1%) Output impedance 600 ohms non-equilibrium Output signal amplitude 2.5Vpp/-25db Microphone Customized omnidirectional capacitor microphone The ordinary four-core telephone wire, category 5 network twisted pair, and shielded cable can be used. Integrated professional pre-amplifier, microphone head can directly drive active speakers, hard disk recorders, tape recorders and so on. Directivity omnidirectional Dynamic Range 80dB (1KHz at Max dB SPL). Range 80dB (1KHz at Max dB SPL) Maximum sound pressure 120dB SPL (1KHz. ![]() There is automatic suppression of the high-intensity sound, reliable protection for the back-end audio equipment. : Microseven Compatible M7WP-MIC Waterproof Outdoor Microphone for. Fishpond United States, Microseven M7WP-MIC waterproof outdoor Microphone for. There is built-in digital voice processing circuits and micro-processing chip, 0.8mm pinhole design principle used to accurately calculate of the sound reflection angle. Microseven M7-PTZDWS-22X Super HAD CCD 22X Zoom Speed Dome Wi-Fi Camera Weatherproof H.264 SD Drive M7-PTZDWS-22X is a high-performance outdoor PTZ speed dome Wi-Fi camera, which features SONY 1/4' Super HAD CCD Sensor and 22X zoom, 360 degree no limit rotation, 64 presets positions, Ethernet and wireless 802.11g, H.264, 720X480 resolutions. It has been used ear handle removable surface annular rib design, easy to wear tube wall installation. It covers the listening area of 375 sq ft / 35 square meters. ![]() It is high sensitivity, high bandwidth, and noise proof. Microseven M7WP-MIC Waterproof Outdoor Microphone for M7B77-POE, M7B57-WPS, M7B77-W,M7D77-POE, Any IP Network Camera & PTZ IP Camera with Audio Interface -an IP Camera External Microphone M7WP-MIC waterproof outdoor Microphone - An IP camera external microphone: Advanced professional environmental sounds digital microphone, pinhole design, and hidden installation. Item: 294288242422 Microseven M7WP-MIC Waterproof Outdoor Microphone for M7B77-POE M7B57-WPS M7B.
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