Furuno DFF3D Thru-Hull Combo Transducer. It can be connected to the DFF3D Multi-Beam Sonar along with one sounder. These transducers save money and space compared to purchasing and installing two separate transducers. Specifications for Furuno 165T-50/200-SS260 DFF3D Thru-Hull Combo Transducer: Manufacturer: Furuno Color: Black Frequency Band: 200 kHz Cable Length: 12 m Hull Type: Thru-Hull Length: 12 m Features of Furuno 165T-50/200-SS260 DFF3D Thru-Hull Combo Transducer Stainless Steel Thru Hull with high speed fairing block Can be flush mounted in keel without using fairing block DFF3D operating frequency: 165 kHz Built-in motion sensor Built in temp sensor 1kW 50/200 kHz 20/6 beam angles for sounder elements - the same elements as an Airmar B164 transducer 12M Cables with 10-pin Connector for sounder 7-pin connector and a pigtail cable for the DFF3D Recommended for a TZtouch2 or a TZtouch/DFF1 and DFF3D installation Package Contents: Furuno 165T-50/200-SS260 DFF3D Thru-Hull Combo Transducer Furuno 165T-50/200-SS260: DFF3D Thru-Hull Combo Transducer 165T-50/200-SS260