Security Camera Mic Noise Reduction Half Ball Dynamic 12V

1 Wide application ranges. Suitable for Public inspection law interrogation room, prison, finance, education (5 - 100 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.

What's in the box
1 x CCTV Microphone