Gateway for Volvo Penta, BRP Rotax, SmartCraft (Mercury, Mercruiser) and J1939 engines to NMEA 2000 marine electronics network. It will provide you with engine revolutions, motor hours, coolant temperature, battery voltage, warning and alarms, fuel rate and other data on the screen of your chart plotter. No extra cables required in most cases thanks to a built-in Y-connector.