MEGA Side 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, all metal bracket and 20’ cable. This accessory is compatible with the following Humminbird products: SOLIX 10 CHIRP MEGA SI+ GPS G2, SOLIX 12 CHIRP MEGA SI+ GPS G2, SOLIX 15 CHIRP MEGA SI+ GPS G2. Dual Spectrum CHIRP Frequencies: Full: 150-220 kHz, Narrow: 180-240 kHz, Wide: 140-200 kHz Dual Spectrum CHIRP Max Depth: 1200ft (365m) MEGA Side Imaging Frequencies - Max Range (side-to-side): 455kHz: 440-500 kHz - 800ft (244m), 800kHz: 790-850 kHz - 250ft (76m), MEGA SI+: 1075-1150 kHz - 400ft (122m) MEGA Down Imaging Frequencies - Max Depth: 455kHz: 440-500 kHz - 400ft (122m), 800kHz: 790-850 kHz - 250ft (76m), MEGA DI+: 1075-1150 kHz - 200ft (61m)