XM 9 20 MSI T: ​MEGA SI, MEGA DI, DualBeam PLUS, 20/60/86/55 degrees, 200/83/455/800 kHz and 1.2 MHz, temperature built-in.  For HELIX MEGA Side Imaging units only.

XTM 9 20 MSI T: MEGA SI, MEGA DI, DualBeam PLUS, 20/60/86/55 degrees, 200/83/455/800 kHz and 1.2 MHz, temperature built-in trolling motor transducer.  For HELIX MEGA Side Imaging units only. This transducer will not fit Minn Kota trolling motors with less than 80 pounds of thrust. 

XPTH 9 20 MSI T: MEGA SI, MEGA DI, DualBeam PLUS, 20/60/86/55 degrees, 200/83/455/800 kHz and 1.2 MHz, temperature built-in, plastic through the hull transducer.  30' cable.  Transducer dimensions:  7.34"L x 3"W.  Shaft diameter:  1.0"