SI-TEX 494/50/200 In-Hull Transducer f/ES502

The SI-TEX 494/50/200 In-Hull Transducer for ES502 is a dual-frequency fishfinder transducer designed for permanent hull mounting on SI-TEX ES502 echo sounders. Operating at 50 kHz and 200 kHz simultaneously, this in-hull transducer delivers the versatility needed for both structure detection and high-resolution bottom imaging without requiring the vessel to be hauled for installation.

The transducer's dual-frequency design covers complementary coverage patterns: the 50 kHz frequency produces a wider 42-degree beam angle for broader area scanning and deep-water performance, while the 200 kHz frequency narrows to a 12-degree beam for precise target definition and shallow-water clarity. Maximum power output reaches 500 watts, enabling strong signal return even in challenging conditions. The plastic housing resists corrosion in saltwater environments, and the 30-foot cable provides flexibility for mounting locations below the waterline. An 8-pin connector interfaces directly with ES502 units, ensuring reliable electrical connection.

This transducer suits both recreational and serious fishing operations where in-hull mounting is preferred—avoiding the installation complexity and potential through-hull vulnerabilities of external bronze fastenings. Anglers targeting everything from coastal structure to offshore depth changes will benefit from the frequency flexibility and established reliability of SI-TEX marine electronics. The 494/50/200 transducer is purpose-built for ES502 systems and maintains the standards SI-TEX has established in professional-grade sonar equipment.