Whilst the actual transducers are typically a standardised product from another manufacturer, it looks very similar to mine, which was with an Autohelm
Yes, I have the pin and the blanking plug, but when I purchase
the boat, the battery
in the adjacent locker had been gassing, so there were some acrid fumes present. I then discovered that the aluminium backing ring holding the transducer housing into the hull had corroded away. I used a ring of epoxy
putty to secure it.
As far as the actual paddle wheel
and plug are concerned, there are 2 separate O rings on the stem, keep them lubricated with silicone grease and it all works well.
I remove the paddle wheel every time I leave the boat - never get any fouling.