![]() 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. 79.99 Sale 109.99 Price 129.99 List Price You Save: 50.00 (38.46) M7B77-WDRPOESAA 1920x1080P Microseven (2020) Open Source 1080P / 30fps True WDR (120dB Wide Dynamic Range), Sony Chipset CMOS ProHD POE Outdoor IP Camera, Amazon Certified Works with Alexa, Two-Way Audio with Built-in Amplified Microphone & Speaker, Wide Angle (150), Human. 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. There is automatic suppression of the high-intensity sound, reliable protection for the back-end audio equipment. Primary telephone number as a factory default. Car Battery Adapter and international power adapter option, instead of 117V, AC/DC adapter is available as options. The model LS15-C is a low-cost version of model LS15, which is a battery-operated, and includes caller-ID simulation. ![]() 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. Find helpful customer reviews and review ratings for Microseven Compatible M7WP-MIC Waterproof Outdoor Microphone for M7B77-W, M7D77-POE, Any IP Network. Other LS15 models include caller-ID or rechargeable battery. 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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