IMPRES Industrial Noise Cancelling Microphone with threaded 3.5mm audio jack - UL Approved

The Motorola NNTN8382 Noise Canceling Remote Microphone (RSM) is an industrial-grade RSM designed for MOTOTRBO digital two-way radios. This RSM uses an innovative dual microphone that suppresses background noise; guarantee that you will be heard regardless of the heavy equipment in use around you.