Depthsounder transducer, help to identify

[Viktor Partyshev]

I have bought used Hunter 19 1993.
Depthsounder/speed transducer installed, but instrument did not came with the boat.
Could you please help me identify the manufacture and model for it?
I hope somebody can recognize it by pictures.
https://photos.app.goo.gl/5Bsi5CoJBOEQ7t4e2
Thanks.