SI-TEX 492/50/200ST Transom Mount Transducer f/ES502

The SI-TEX 492/50/200ST Transom Mount Transducer for ES502 is a dual-frequency sonar transducer engineered for recreational and professional mariners who demand reliable fish detection and bottom imaging. This transom-mounted unit combines proven SI-TEX technology with versatile 50/200 kHz frequency capability, making it suitable for everything from freshwater lakes to coastal saltwater applications. The 30-foot cable ensures flexible installation on vessels ranging from small center consoles to larger cabin cruisers seeking accurate depth, temperature, and speed readings.

Built with a durable plastic housing and rated for 500W maximum power output, the SI-TEX 492/50/200ST delivers distinct operational advantages across its dual frequencies. The 42-degree beam angle at 50 kHz provides broad coverage for general structure and fish location, while the narrower 12-degree beam at 200 kHz enables higher-resolution target definition and precise bottom mapping. The integrated temperature sensor and speed log capability add depth to your sonar data, allowing real-time water condition monitoring and accurate GPS-independent speed calculations—critical for trolling and navigation consistency.

This transducer is optimized for ES502 sonar units and features an 8-pin connector standard to SI-TEX marine electronics ecosystems. Anglers, commercial operators, and serious hobbyists benefit most from the dual-frequency flexibility and compact form factor, which minimizes drag and underwater noise compared to larger designs. Installation is straightforward for DIY mounting or professional setup, with the 30-foot cable length accommodating most hull configurations. Whether you're upgrading existing SI-TEX electronics or building a complete sonar package, the 492/50/200ST offers proven reliability and multi-purpose performance at a competitive price point.