TELEX NC450D - Noise-Cancelling Push-To-Talk Paging MicrophoneNoise cancelling dynamic hand microphone with push to talk switch for paging. NC450Ds noise canceling design makes it particularly effective for use in noisy locations. Its excellent voice response characteristics also make it an excellent choice in quiet areas. 200 ohm impedance matches low impedance inputs. Features: Tailored response for voice intelligibility Rugged ABS construction Two position momentary slide switch Unterminated, 4 conductor, 2
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