XM 9 HW MDI T Transom Mount TransducerMEGA 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 8 G3N Series MEGA DI+ and MEGA SI+, HELIX 9 G3N Series MEGA DI+ and MEGA SI+, HELIX 10 G3N Series MEGA DI+ and MEGA SI+, HELIX 12 G3N Series MEGA DI+ and MEGA SI+. Dual Spectrum CHIRP Frequencies: Full: 150-220 kHz, Narrow: 180-240 kHz, Wide: 140-200 kHz Dual Spectrum CHIRP Max Depth: 1200ft (365m) Down Imaging Frequencies - Max Depth: 455kHz: 440-500 kHz - 400ft (122m), 800kHz: 790-850 kHz - 125ft (38m), MEGA DI+: 1075-1150 kHz - 200ft (61m) 1-Year Limited Warranty WARNING: This product can expose you to chemicals including LEAD which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Temperature: Yes Speed Included: No Pins: 7 Mounting Style: Transom Imagining: Standard/Down Chirp: High Wide Cable Length (Feet): 20&'; Box Dimensions: 7"H x 8"W x 10"L WT: 2.25 lbs UPC: 082324053207 Owner&';s Manual (pdf)