R300 AIS Receiver The em-trak AIS R300 is a dual-channel high-performance AIS receiver that provides the best operational performance. You can receive high-performance, dependable AIS messages from the em-trak R300 thanks to its compact, durable, and power-efficient design. All AIS messages within range will be reliably received, processed, and output to your chart plotter or PC in real-time. Features: Small and robust  Plug-and-play connectivity with chart plotters and PCs  Low power consumption  Rugged, vibration-resistant  NMEA 0183, NMEA 2000, and USB support IP67 waterproof Anti-tamper and security features MOB and SAT detection This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Quick Guid https://productimageserver.com/literature/quickGuide/99816QG.pdf Owners Manual https://productimageserver.com/literature/ownersManual/99816OM.pdf