The NMR183 NMEA Reader is a simple easy to use handheld device for use with any marine equipment that outputs NMEA0183 data. The NMR183 allows the easy monitoring of NMEA serial data which conforms to the International IEC61162 Standard. The NMR183 able to save NMEA data into an SD CARD, transmit NMEA data from text files located on the SD CARD, it also accepts Speed Log Pulse and also transmit Speed Log Pulses. A replaceable 100mA fuse is provided offer protection against HIGH VOLTAGE Inputs.