RealVision 3D RV-100 Plastic Transom Mount Transducer with 26' (8meters) Cable by Raymarine, Measures: Depth/Temperature. Frequency: 50-60/200-350kHz. Max Power: 600W. Accommodates Deadrise: 0 - 90 degrees. Raymarine's RV-100 All-In-One Transom Mount Transducer lets you easily identify structures and locate fish with the life-like clarity of RealVision 3D sonar. The RV-100 is a 4-channel, Wide Spectrum CHIRP transducer with DownVision, SideVision, high frequency CHIRP fish targeting and RealVision 3D sonar inside.