Raymarine E66072 Speed/Temp Transducer ST800-B-RAY

This is a retractable speed and temperature thru-hull transducer in a bronze housing, that is designed for use with in-hull fishfinder transducers. It comes with a Y-cable that combines with the cable from the depth-only fishfinder transducer to feed depth, speed and temperature to a DSM30 or DSM300. The housing has a valve to guard against water ingress when cleaning the paddlewheel, and a blanking plug is included.

Raymarine sells this transducer as part E66072 or B120-ST800.

There is also a plastic version, the P120-ST800.