Garmin GT30-THP SS Thru-Hull Pair DownVu/SideVu Scanning Transducer w/Temp f/Hull Deadrises 5-25 [010-01961-11]Garmin GT30 THP Stainless Steel Thru hull Pair DownV SideV 500W (CHIRP 455 800 kHz) Scanning Transducers with Temp, for Hull Deadrises from 5 to 25 (12 pin) Get ultra clear sonar pictures of objects, structure and fish that pass below and to the side of your boat with these 12 pin thru hull transducer with stainless steel stems. These transducers with built in fast response temperature sensors have a power rating of 500 W per element (1,500 W total);