Airmar DT820BV-235-N2 235 kHz Low Profile Tilted Element Smart Sensor 20 Tilt Bronze NMEA 2000Airmar has taken its proven Tilted Element and broadband technologies and applied them to its leading line of Smart Sensors. The DT800 is a low-profile, retractable, thru-hull sensor that computes accurate depth and temperature data and sends it to any NMEA 0183 or NMEA 2000 display. The DT800 operates at a frequency of 235 kHz and can run simultaneously with other Airmar 50200 kHz transducers on-board