Item73633 GVO Marine Electronics: We provide reliable, safe online shopping 24 hours a day, 7 days a week throughout the U.S. and the world. We are strongly committed to providing our customers with top quality merchandise and world class service. XNT-9-HW-MDI-75-T MEGA DI Dual Spectrum CHIRP Transom Mount Transducer with Temp for HELIX 7/8 MEGA Down Imaging Transom Mount Transducer supports MEGA Imaging/800kHz/455kHz and Dual Spectrum CHIRP 2D Sonar with a CHIRP range of 150-220kHz. Includes built-in temperature sensor, rugged composite design, impact-release mounting bracket and 20’ cable. Features: This accessory is compatible with the following Humminbird products: HELIX 7 CHIRP MEGA DI GPS G3, HELIX 7 CHIRP MEGA DI GPS G3N, HELIX 8 CHIRP MEGA DI GPS G3N. Dual Spectrum CHIRP Frequencies: Full: 150-220 kHz, Narrow: 180-240 kHz, Wide: 140-200 kHz Dual Spectrum CHIRP Max Depth: 1200ft (365m) MEGA Down Imaging Frequencies - Max Depth: 455kHz: 440-500 kHz - 350ft (107m), MEGA DI: 1075-1150 kHz - 125ft (38m) GVO Marine Electronics: . Get the item you ordered or get your money back. Covers your purchase price and original shipping.