Digital Yacht AIT250 Class B AIS TRANSPONDER * Full CLASS B AIS transponder compliant to IEC62287-1 and CE0168 * Sends and receives AIS data so your position, course, speed, heading and identity are transmitted to other AIS users as well as receiving other CLASS A and CLASS B data transmissions for viewing on a compatible plotter or PC charting system * Built in GPS - provides compatible devices with a position data feed * Built in dual channel receiver with NMEA/RS232 output for connection to compatible plotter or PC charting system * Silence mode switch - turn off the transponder if appropriate * Supplied complete with GPS antenna and VHF antenna and suitable for DIY installation * Measures just 190 x 175 x 91mm * 12V DC (9.6-15v) operation. Average power consumption 4W * Built in integrity testing for constant monitoring and easy to view LED status lights * Optional distress function with safety related message (SRM) capability * Supplied with dedicated GPS and VHF antennas