RayMarine CPT-S Plastic Conical HIGH CHIRP Transom Mount Transducer (Requires A80490 Adaptor Cable)The CPT S transom mount transducer provides sonar imagery and reliable depth recording in a small and inexpensive package. With a simple design, the CPT S is easy to install while offering excellent speed performance. The CPT S transom mount is recommended for boats with outboard engines. Features Supports a single High CHIRP sonar with a 25 conical beam Integrated seawater temperature sensor Up to 900 ft (274 m) depth range Includes mounting bracket