Garmin GT21-TM CHIRP DownVu Transom-Mount Transducer
This transom-mount transducer provides ultra-clear sonar pictures of objects, structures, and fish that pass below your boat. This traditional and CHIRP DownV transducer is optimized for depth performance and rough conditions. The CHIRP DownV element has a power rating of 260/455 kHz. The traditional sonar has a power rating of 600W and operating frequencies of 50/200 kHz. Also includes a built-in fast-response temperature sensor. Compatible with echoMAP 43dv, echoMAP 44dv, echoMAP 53dv, echoMAP 54dv, echoMAP 73dv, echoMAP 73sv, echoMAP 74sv, echoMAP 94sv, GPSMAP 7607xsv, GPSMAP 7608xsv, GPSMAP 7610xsv, GPSMAP 7612xsv, and GSD 25 Premium Sonar Module. GT21-TM includes an 8-pin transducer with mounting hardware and installation instructions.
Garmin GT21-TM CHIRP DownVu Transom-Mount Transducer Review
Good marine electronics and came shipped quite quick