RV 300 Realvision 3D probe - through plastic 0° Raymarine's RV - 300 all - in - one plastic through - hull transducers are designed for inboard or outboard powerboats. The RV - 300 transducer lets you easily identify structure and locate fish with the life - like clarity of RealVision 3D™ sonar. The RV - 300 transducer is a 4 - channel, wide - spectrum CHIRP transducer that has DownVision™, SideVision™, RealVision3D™ sonar inside, as well as a high - frequency CHIRP fish - targeting device. The transducer is also equipped with an Attitude and Heading Reference System (AHRS) which stabilizes sonar imagery by automatically compensating for vessel motion. You'll get crystal clear images, even in waves, swells and when maneuvering. The RV - 300 transducer also has a sensor to quickly and accurately measure water temperature. The RV - 300 transducer has a tough plastic through - hull suitable for fiberglass, steel or aluminum hulls. RealVision 3D™ are organized with an offset of 0° for flat - bottomed boats. The low profile model glides easily through the water without causing drag or cavitation. The RV - 300 “near - flush” also ideal for trailer boats. The absence of a profiling block to be cut makes installation very simple. Box contents - Bronze RV - 300 all - in - one transom mount transducer with 8 meter cable - Anti - rotation bolt kit - Installation instructions