Garmin GT50M-THP penetrating full hull Chrip/DownVision and side scan sensor (PAIR) This pair of penetrating hull sensors can provide ultra-clear sonar images for detecting objects, structures and fish passing under the ship. These traditional CHIRP sonar and CHIRPDownVÃƒÂ¼/SideVÃƒÂ¼ sensors are optimized to obtain clearer images at shallower depths. The CHIRPDownVÃƒÂ¼/SideVÃƒÂ¼ element has a rated power of 500 W per element (1,500 W in total) and an operating frequency of 455/800 kHz. The rated power of traditional CHIRP sonar is 300 W, and the working frequency of mid-band CHIRP is 80-160 kHz. It includes a built-in fast response temperature sensor. For the hull, the dead angle is less than 25 degrees. GT50M-THP includes a 12-pin port/starboard sensor with stainless steel rod, fairing, Y-cable, bushing, mounting hardware and installation instructions. Please follow the instructions carefully to avoid damage to your boat.