Transom Mount, Mega Side Imaging+, Mega Down Imagining+ and Dual Spectrum Chirp 20 Sonar, 800kHz/455 kHz and 1.2 MHz with a Chirp range of 150-220 kHz. Includes a built-in temperature sensor.

Product Details 

• Compatible with: Helix 12/10/9/8 Chirp Mega SI+ G3N, Helix 15/12/10/9/8 Chirp Mega SI+ G4N
• Cable Length: 20 feet
• 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): 455 kHz: 440-500 kHz - 800ft (244m), 800 kHz: 790-850 kHz - 250ft (76m), Mega SI+: 1075-1150 kHz - 400 ft (122m)
• Mega Down Imaging+ Frequencies - Max Depth: 455 kHZ: 440-500 kHz - 400ft (122m), 800 kHz: 790-850 kHz - 125ft (38m), Mega DI+: 1075-1150 kHz - 200ft (61m)