The DST800 is a flush mount, plastic thru-hull smart sensor that will provide digital depth(numbers only), speed and temp readings to your existing NMEA 2000 network. This smart sensor works at speeds up to 52 knots and depth up to 200'. The DST 800 operates at 235khz so that it will not interfere with 200khz fishfinders and is designed for boats with 0 - 8 degrees deadrise. Compatible with Garmin, Northstar, Raymarine, Lowrance, Simrad and Furuno.