Wall paging microphone (flush or surface mounting). With talk button and sensitivity adjustment. Power supply 24 V DC. Maximum consumption of 90 mA...
High sensitivity electret microphone mounted on a threaded brass cylinder, for recessed installation to capture the ambient sound, and preamplifier with balanced signal output...
High sensitivity electret microphone and preamplifier with balanced signal output and selectable sensitivity (0, -30, -60 dB) in a plastic box...