The DT812 is a flush mount, plastic thru-hull smart sensor that will provide digital depth(numbers only) and temp readings to your existing NMEA 2000 network. This smart sensor works at speeds up to 52 knots and depth up to 200'. By operating at 235khz, the DT812 will not interfere with your 200khz fishfinder. The transducer element in the DT 812 is tilted at 12 degrees for use in boats with 8-15 degree deadrise and is compatible with Garmin, Northstar, Raymarine, Lowrance, Simrad and Furuno.