Microphone for cctv cameras mircophone for DVR Voice pick up audio microphone more voice pick up microphone device optional CCTV accessories- Voice pick up device-CCTV microphoneFor CCTV camera /DVR /other surveillance device voice pick up..Microphone with Cable, 10-20sq. M coverage, 0.3km transmit distance; -40dB sensitivity; S/N 70dB; PVC shell Microphone for cctv camera DVR audio voice pick up ...