¡ì fidelity low noise processing chip¡ì imported microphone suppress ambient noise¡ì small sensitivity can be adjusted¡ì Car DVR dedicated¡ì Built-in noise reduction processing circuit¡ì polarity protection of power supply regulator circuit
5 to 80 square metersImpedance 600 ohmsFrequency of 500 ~ 8KhzPower 9 ~ 14VDCSize 39 * 31 * 18mmSuitable for most car DVR device, Rui Ming