Raymarine e26008 plastic thru-hull speed and temperature transducer, short version in P371 housing with 9 m cable, 51 mm diameter, 75 mm height from hull bottom.
This transducer is compatible with:
ST40 and i40 in SeaTalk1 network
not compatible with ITC-5
Raymarine E26008 transducer is part of i40 / ST40 Log and i40 Bidata / ST40.