Designed for inboard or outboard boats, the RV-220 bronze through hull transducer system lets you easily identify structures and locate fish with the life like clarity of RealVision 3D sonar. The RV-220 system is a 4 channel, wide spectrum CHIRP transducer system with DownVision, SideVision, high frequency CHIRP fish targeting and RealVision 3D sonar inside. The transducer system has a built-in Attitude and Heading Reference System (AHRS) that stabilizes the sonar imagery, automatically compensating for vessel motion. You’ll enjoy crystal clear imagery in waves, swells, and while maneuvering. The RV-220 system also has a built-in fast response water temperature sensor for quick, accurate readings. Raymarine’s RV-220 bronze through hull transducer system pack contains a pair of RealVision 3D transducers with internal offset to accommodate hull deadrise angles from 14 to 26 deg. This completely eliminates the need for fairing blocks. The low profile design slips effortlessly through the water without causing drag or cavitation. The near flush RV-220 system works great on trailered boats too. The RV-220 system features rugged cast bronze through hull bodies suitable for fiberglass or wooden hulls. One transducer transmits and receives to port and downwards, the other to starboard and downwards, ensuring a full 180 deg of underwater coverage even on boats with deep keels or other underwater protrusions. Each transducer features a 2 m pigtail, joining y cable and 8 m extension cable, resulting in an overall cable length of 10 m.