Dahua

branded Omnidirectional external microphone High sound quality S/N ratio (signal-to-noise) 58 dB Sensitivity -43 dB Dynamic range 74 dB 5 ..

branded Omnidirectional external microphone High quality with noise reduction Automatic volume control integrated into the processor Audio out..

branded Omnidirectional external microphone High sound quality High anti-interference power S/N ratio (signal-to-noise) 85 dB Sensitivity -3..

Omnidirectional external microphone Connector by cable + VDC (red) GND (black) and audio (white) DC9V ~ 12V power S / N 85 dB ratio Sensitivit..