The FURUNO IC-305 Distress Alert/Received Call Unit is a critical maritime safety component designed specifically for FURUNO INMARSAT Mobile Earth Stations (MES). Engineered for absolute reliability in emergency situations, this unit features a flip-cover protected DISTRESS push button to prevent accidental activation. When pressed and held for four seconds, it securely transmits a distress alert to rescue coordination centers, which is visually confirmed to the operator by a steady lighting indicator. Furthermore, the unit includes an ALARM ACK button for efficiently managing and acknowledging received calls. Manufactured in Japan by FURUNO ELECTRIC CO., LTD., the IC-305 meets rigorous marine safety standards and is an essential addition to any commercial vessel’s GMDSS communication network.