The Lowrance Ethext-15Yl Ethernet Cable is made to withstand the toughest onboard marine environments. The cable networks any NMEA-certified sensor on the boat such as sonar, GPS and multifunction gauge, regardless of brand, to share or display user-selectable data with other instruments installed on the network. For example, the use of a fuel-flow sensor in conjunction with a GPS or speed sensor can provide detailed information to help you manage fuel consumption and calculate range.