RealVision 3D Bronze Thru-Hull Transducer Pair Pack – 20degrees – 8M Cable & Y-Cable. 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 13degrees to 20degrees. 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 180degrees of underwater coverage even on boats with deep keels or other underwater protrusions. Each transducer features a 2M pigtail, joining y-cable and 8-meter extension cable, resulting in an overall cable length of 10M (33′.). What’ s in the Box?. RV-220P Bronze Port Transducer with 2M cable. RV-220S Bronze Starboard Transducer with 2M cable. RealVision 3D Transducer Y-Cable. RealVision 3D 8M (26′) Transducer Extension Cable. Anti-rotation bolt kit. Installation instructions.