Humminbird HELIX Transom Mount Transducer

. Transom mount with MEGA Down Imaging (455khz and 1.2mhz) dual Spectrum CHIRP 2D Sonar (150-220khz), Temperature sensor and 20' cable. For use with: HELIX 7 MEGA DI GPS- G3/ G3N/ G4/ G4N MODELS. HELIX 8 MEGA DI GPS G3N/G4N MODELS.