I brought my unit home and went thru the 2d sonar list. HST-WSBL selection should work. I looked the numbers up, so several selections will work. Any selection starting with the letter P is for portable transducers. Makes sense. Will also work if you pick the right one.Rofl

I don't see any advantage to any particular selections. I get everything I need with "unknown", including temp....

Navico: HST-WSBL

I am gonna try this selection to see what happens.

All the first 10-12 selections are for some type Lowrance Head unit.

You can type in the Part Numbers (from HDS selection list)in the Google search window and find what the transducers are designed to fit/work/match etc.

FYI. Besides, I didn't have much to do today. Cold here.