Raymarine CPT-S Transom CHIRP Sonar – 25° Beam, 900ft Depth Range

The E70342 CPT-S transom-mount CHIRP transducer delivers a high-frequency conical beam for reliable fish detection and precise depth readings in a compact, affordable package. Its 25° conical beam covers a wide area beneath your boat while retaining excellent target detail and separation. The transducer offers a maximum depth range of 900 feet (274 m), which is sufficient for most coastal and inland fishing grounds.

Built for easy transom installation, the CPT-S features a durable urethane body suitable for fiberglass, wood, or metal hulls. It comes complete with a transom bracket and a 10 m cable, simplifying setup even on larger boats. An integrated fast-response temperature sensor provides real-time water temperature data, useful for locating thermoclines and understanding fish behavior. Hydrodynamic design ensures stable performance at speed, enabling accurate depth tracking even when the boat is on plane.

Compatibility & Connectivity: The CPT-S transducer plugs directly into Raymarine Element S series chartplotter/fishfinders and Axiom DV models without requiring adapters. For Axiom Pro S and Axiom 2 Pro S units, use the A80490 adapter cable to connect the CPT-S. To connect to an Element HV system, the A80559 adapter is required (note: CPT-S supports only High CHIRP sonar; HyperVision sonar modes on Element HV require an HV transducer). The CPT-S can also interface with other Raymarine MFDs with sonar (e.g. Axiom+, Axiom Pro RVX) via appropriate adapters, offering great flexibility for system upgrades. As a single-element High CHIRP transducer, it does not provide DownVision imaging, focusing solely on conical sonar for fish finding and depth. This makes it an excellent choice for anglers seeking a straightforward yet high-quality fishfinder/depth sounder solution.

Recommended Use: The CPT-S transom transducer is ideal for small to mid-sized boats – such as fishing skiffs, RIBs, and runabouts – especially those with outboard engines. It excels in shallow to moderate depths, delivering clear fish arches and bottom structure detail for both freshwater and coastal saltwater fishing. Thanks to its low-profile design and strong performance at speed, the CPT-S is well-suited for trolling, cruising, and quick spot hopping without loss of sonar readings. Backed by a 2-year warranty and Raymarine’s reputation for quality, this transducer offers dependable service and longevity on the water.