Home Electronics & Navigation Marine Navigation HELIX Transom Mount Transducer (XM 9 20 MSI T) Humminbird HELIX Transom Mount Transducer (XM 9 20 MSI T) $352.39 HELIX Transom Mount Transducer (XM 9 20 MSI T) quantity Add to cart Product Details Product Details MEGA SI, MEGA DI, DualBeam PLUS. 20/60/86/55�, 200/83/455/800 kHz and 1.2 MHz. Includes built-in temperature sensor and 20′ cable. For use with: HELIX 9 CHIRP MEGA SI GPS G2N, HELIX 10 CHIRP MEGA SI GPS G2N, HELIX 12 CHIRP MEGA SI GPS G2N.
