Raymarine DST810 Gen2; Thru Hull [E70667]DST810 Gen2 0 Thru Hull The DST810 Gen2 is a Smart Multisensor through hull transducer that offers the depth, speed, and temperature functions in one compact thru hull fitting. The low profile, retractable sensor computes accurate depth, speed, and temperature data and communicates on a single NMEA200 data cable. The DST810 Gen2 also features an integrated vessel attitude sensor and Bluetooth technology that allows boaters a simple way to calibrate