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. Type: Extension. Special Feature: Waterproof. Cable Type: Raymarine Transducer Proprietary. Connector Type: 3-pin Xlr Male to Female. Compatible Devices: Raymarine RealVision 3D Transducers. Recommended Uses: Extending the reach of RealVision 3D Transducer cables for underwater imaging in activities like fishing or boating. Package: coiled in protective tubing or sealed anti-static bag. Maximum Voltage: 12 Volts (DC).