ICOM MA-500TR is a compact, waterproof Class B AIS transponder that actively notifies other vessels of your exact position, thus increasing your safety at sea. The MA-500TR also has a dual channel receiver allowing boat owners to receive AIS information (both Class A and Class B AIS signals) on two channels simultaneously. The MA-500TR has three basic display types; Plotter, Target list and Danger list. The “Display mode” button allows you to toggle between these display types. In addition to these displays, the detail screen shows information about the selected AIS target