The YDTA-04 allows you to connect up to four of existing resistive or voltage type fluid level sensors installed on tanks and display the fluid level on NMEA 2000 devices. The Device is equipped with a hidden button that allows switching among 15 configuration presets. For typical use cases, it allows to configure the Device in seconds! However, for advanced configuration (calibration curves, digital switching functions, connection in parallel with analog gauges, using voltage sensors) the NMEA 2000 PC gateway is required.