SI-TEX SAS-900 6" Color Class A AIS Transceiver [SAS-900]SAS 900 6" Color Class A AIS Transceiver Internationally Certified SOLAS Class A AIS Transceiver SAS 900 is the world's most sophisticated and robust SOLAS and Inland Waterway certified AIS Class A Transceiver. Fourth generation AIS technology delivers unmatched real world AIS receive, transmit and message processing performance and reliability. Quality engineered and manufactured without compromise, with features such as IPX7 weather proofing and