Garmin Sonar Transom Mount - GT20-TM 4 pin connector - 010-01960-00Garmin Sonar Transom Mount GT20 TM pin connector 010 01960 00 Perfect for the shallow water fisherman who want traditional and CHIRP ClearV scanning sonar, this transom or trolling motor mounted transducer consistently displays fish arches as well as clear pictures of objects, structure and fish that pass below your boat. The 20 ft transducer cable with built in fast response temperature sensor has a power rating of 500 W; a depth of 1,900 ft