Garmin GT21-TH w/ Temp Brand New Includes One Year Warranty Product # 010-01962-10 The Garmin 010-01962-10 is a thru-hull transducer which provides ultra-clear sonar pictures of objects, structure and fish that pass below the boat. The Traditional CHIRP sonar and CHIRP DownV transducer is optimized for clear images at shallower depths. The CHIRP DownV / SideV elements have a power rating of 500 W per element and operating frequencies of 260/455 kHz. The traditional CHIRP sonar has a power rating of 600 W and operating frequencies of mid-band CHIRP 50/200 kHz. It also includes a built-in fast-response temperature sensor. 010-01962-10 Features Thru-Hull 8-pin Transducer Provides Depth Temp Data CHIRP DownV Operating Frequency 260/455 kHz Traditional CHIRP Operating Frequency 50/200 kHz Mounts on Less Than 25 Deadrise Angle Provides Ultra-Clear Sonar Pictures of Objects, Structure Fish Built In Temperature Sensor Includes 8-Pin Transducer w/ Stainless Steel Stem Fairing Block Isolation Plate Bushings Mounting Hardware Installation Instructions