Raymarine TM Depth Transducer f/ST40 P66. Compatible with the following: ST40 Instruments Compatible hull material: metal wood and fiberglass Cable: 30ft (10m) Depth Only Specifications for Raymarine P66 TM Depth Transducer f/ST40: Manufacturer: Raymarine Color: Black Frequency Band: 200 kHz Cable Length: 30 ft Features of Raymarine P66 TM Depth Transducer f/ST40 Cable Length (Feet): 30' Frequency: 200 kHz Mounting Style: Transom Speed Included: No Temperature: No Package Contents: Raymarine P66 TM Depth Transducer f/ST40 Raymarine E26027-PZ: TM Depth Transducer f/ST40 P66