Raymarine RVM-100 Transom Mount Transducer [A80703]RVM 100 Transom Mount Transducer RVM 100 all in one transom mount transducer is designed for Raymarine RealVision MAX compatible sonar modules, and RealVision MAX equipped chartplotters. The RVM 100 lets you easily identify structures and locate fish with the life like clarity of RealVision MAX technology. The RVM 100 is a 4 channel, Wide Spectrum CHIRP transducer with DownVision, SideVision, high frequency CHIRP fish targeting, and 3D sonar inside.