Interface Module for PTT or VOX Operation - Intrinsically Safe (FM) CommPort: Integrated Microphone/Receiver: CommPort Integrated Microphone/Receiver System is a communication device that is intelligible in high noise levels up to 100dB. This device's acoustic technology does not rely on bone conduction for communication.

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Motorola often changes the product SKU name. This product may have also been known as RMN5117a, RMN5117b, RMN5117c, RMN5117d, RMN5117e, RMN5117f, RMN5117ar.