Boundary Microphones
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Astatic 201R Cardioid Electret Condenser Boundary Microphone
The Astatic 201R Cardioid Electret Condenser Boundary Microphone is a miniature, high performance microphone designed for low profile mounting in panels, tables, or ceilings. They have been redesigned with improved RF immunity to greatly reduce susceptibility to radio interference from GSM based cell phones.