Examples of the option boards available include Voice storage for message recording, storage and play-back, encryption for enhanced security, and SmarTrunk II for low-cost trunking. The GM338 supports the Motorola PROIS Specification which means that it's already impressive feature set may be further enhanced via a range of Motorola, and third-party, plug-in option boards. In addition to supporting a range of value-add accessories, the GM338's rear I/O connector provides an interface for third-party terminals, enabling seamless data communications on the move. The Motorola X-Pandâ„¢ audio enhancement system helps to ensure that voice communications are heard first time, every time, even in noisy working environments This means that those features most valued by your workforce can be programmed to specific buttons labelled with instantly recognised legends. User-friendliness is further enhanced through the use of swappable, programmable buttons. The intuitive menu-driven user interface and large, clearly labelled controls enable quick and easy access to the GM338's many features. Designed for use in extreme operating conditions, the GM338 exceeds the demanding requirements set out in US Military Standards and IP54 specification. The GM338 like all Motorola two-way radios, has passed the unique Motorola Accelerated Life Test which simulates 5 years hard use in real-life conditions. Motorola GM338 UHF VHF Mobile Base Station Radio Car Two-Way Radio