SitexTM150M Transom Mount 300 watt, Frequency 95 - 155 k

The SI-TEX TM150M transom mount transducer is a medium-frequency CHIRP sounder designed for serious anglers and boaters who demand reliable, affordable fish-finding technology. This 300-watt unit mounts cleanly to your transom, eliminating the need for through-hull installation while delivering consistent performance in freshwater and coastal environments. Whether you're targeting structure in lakes or running offshore, the TM150M bridges the gap between budget-conscious operators and those seeking professional-grade sonar without premium pricing.

Operating across the 95 to 155 kHz frequency band, this medium-frequency transducer excels at medium-range target separation and depth coverage. The integrated fast-response water-temperature sensor provides real-time thermal data critical for seasonal fish behavior prediction—especially valuable when the bite depends on thermocline positioning. The beamwidth characteristics (26° to 17°) concentrate sonar energy efficiently, focusing power on targets rather than spreading it across dead water, which means clearer images of suspended fish, bait schools, and bottom composition at practical fishing distances.

Transom-mounted operation makes installation straightforward for boat owners upgrading existing systems or building modest rigs where hull penetration isn't practical. The 2-pound weight ensures minimal impact on boat balance, and the compact form factor works on vessels ranging from center consoles to skiffs to pontoons. Compatibility with SI-TEX legacy systems makes this an economical choice for existing users maintaining or expanding multi-transducer setups, while newcomers gain entry to proven CHIRP sonar technology at entry-level investment.