The link to Garmin GST 10 Water Speed/Temperature Analog Adapter has been copied
The NMEA 2000 analog adapter is the perfect accessory to bring any helm into the digital age. Simple to install and easy to set up, the NMEA 2000 adapter takes signals generated by traditional analog gauges and sensors and converts that data into NMEA 2000 format. The data can then be broadcast over NMEA 2000 protocol to your Garmin GMI 10 multifunction instrument display. The combination of this adapter with a Garmin GMI 10 will transform even the most out-of-date dashboard into a glass, digital helm.