RaymarineRealVision 3D Transducer Extension Cable - 8M (26') [A80477]RealVision 3D Transducer Extension Cable 8M (26') RealVision 3D Transducer Extension Cables work with the transom mounted RV 100 and through hull RV 200 and RV 300 series transducers. Each extension cable features a waterproof, twist lock connector at the MFD end, and a compatible socket at the transducer end. For best performance, Raymarine recommends using no more than two (2) extension cables in any cable run. Specifications: Type: Extension Box