Which transom mounted transducer or transducers are needed ?

The Furuno TZT10X multifunction display has a built-in 1kW dual-channel TruEcho CHIRP™ fish finder, supporting both CHIRP (40 kHz to 240 kHz) and CW (50/200 kHz) frequencies, as well as a built-in 235kHz or 455kHz CHIRP Side-Scan. This allows for a variety of compatible transducer options depending on desired functionality and depth requirements.