Wired Remote Access Microphone RAM4 Standard Horizon's wired remote access microphone RAM4 for Standard's GX6000 and GX6500.  Features: * Controls all radio functions of the main station radio* * Operate up to 2 RAM4 wired remote stations * Submersible IPX8 waterproof rating (1.5 M or 4.92 feet for 30 minutes) * Intercom feature allows you to communicate between the radio, RAM4 and Wireless RAM4W microphones * Full AIS target display * Perform all DSC functions: Individual calling, group calling, Position polling and more * Larger high resolution easy to read display with bright backlight * Rotary channel and volume controls * Programmable hot keys for quick menu access * 23’ routing cable included * 3 Year Waterproof Warranty *The SSM-70H is not backwards compatible with other Standard Horizon Models