⁺DC 9‑15V CCTV Microphone Waterproof Sensitive Sound Monitor Mic For
Feature: \n 1. Wide application ranges. Suitable for prison, detention center, detention center, station, etc. (5 \u2011 50\u33A1).\n2. High sensitivity, low noise, very low power consumption, power supply polarity protection circuit\n3. Signal transmission distance is approx. 1000m/1093.6yd. Frequency response is 20Hz \u2011 20kHz.\n4. Connection method is 3\u2011wire system. Red is connected to power positive pole, black is connected to public GND, white is connected to audio positive pole.\n5. An electro\u2011acoustic instrument that amplifies sound by receiving sound vibrations. \n\nSpecification: \n\nItem Type: CCTV Microphone\nMaterial: Aluminium alloy\nPlace of Use and Area: For prison, detention center, detention center, station, etc. (5 - 50\u33A1)\nSignal Transmission Distance: Approx. 1000m/1093.6yd\nFrequency Response: 20Hz - 20KHz\nDirectional Property: Omnidirectional\nConnection Mode: 3 Wire system (Red is connected to power positive pole, black is connected to publi:
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