Transom Mount; 7 Pin; 1200 Feet Maximum Depth; 150/ 220 kHz Full Dual Spectrum CHIRP Frequency, 455 kHz/ 1.2 MHz Operating Frequency; 20 Feet Cable; With Built In Temperature Sensor/ 20 Feet Cable With 7 Pin Plug; Compatible With HELIX 7 CHIRP MEGA DI GPS G3, HELIX 7 CHIRP MEGA DI GPS G3N, HELIX 7 CHIRP MSI GPS G3, HELIX 7 CHIRP MSI GPS G3N, HELIX 7 CHIRP MSI GPS G4, HELIX 7 CHIRP MSI GPS G4N