Garmin 010-12089-00 GT30-TM Transom Mount DownVu/SideVu Scanning Transducer with Temperature Sensor (12-Pin) 12-pin transducer Get ultra-clear sonar pictures of objects, structure and fish that pass below and to the side of your boat 20 ft. transducer cable with built-in fast response temperature sensor Power rating of 500 W per element (1,500 W total); a depth of 750 ft. (DownVu) and 500 ft. left and right (SideVu); an operating frequency of 455/800 kHz Pair it with GCV 10 black box sonar