DC 12V CCTV Microphone Half Ball Type Dynamic Noise Reduction Sensitive for Security Camera

Feature: 1. Wide application ranges. Suitable for Public inspection law interrogation room, prison, finance, education (5 ? 100square meters adjustable). 2. High sensitivity, low noise, very low power consumption, power supply polarity protection circuit. 3. Signal transmission distance is approx. 1000m/1093.6yd. Frequency response is 20Hz ? 20kHz. 4. Connection method is 3?wire system. Red is connected to power positive pole, black is connected to public GND, white is connected to audio positive pole. 5. An electro?acoustic instrument that amplifies sound by receiving sound vibrations. Specification: Item Type: CCTV Microphone Material: ABS Use place and area: Public inspection law interrogation room, prison, finance, education (5 - 100square meters adjustable) Signal Transmission Distance: Approx.1000m/1093.6yd Frequency Response: 20Hz - 20KHz Pointing Feature: Full pointing Output Signal Amplitude: 2.5VPP / -25dB Connection Mode: 3 Wire system(Red is connected to power positive pole, black is connected to public GND, white is connected to audio positive pole) Transmission Cable: RVVP3 x 1.5mm2 Power Supply Voltage: DC 12V. Package List: 1 x CCTV Microphone1 x English Manual