Si-Tex Class B/SO AIS 5 watts Transceiver. Does NOT have a wifi module. With a 5-watt transmitting power, this higher output power means your vessel will be seen at longer ranges by other vessels and via AIS website. SOTDMA Class A priorities means that your vessel will always transmit and be seen in very congested commercial harbors and ports where traditional Class B units don't have network priority. Features an integrated zero loss VHF antenna splitter (no second antenna needed!). Water proof certified to IPX7. IEC-62287-2, FCC, USCG certified and Industry Canada approved.