Network Sensors:Fish Finder

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NavNet TZtouch Network Fish Finder

The FURUNO DFF1, DFF3, BBDS1 and DFF1-UHD can turn any NavNet TZtouch display into a powerful, dual frequency fish finder. They can be connected directly to a NavNet display or an Ethernet hub with a single Ethernet cable. All support a variety of transducer options.

  • Enhanced detection of fish targets by FURUNO Digital Filter (FDF™) Fish Finder technology
  • Selectable display modes include High or Low Frequency, Dual Frequency, Zoom, Nav Data, A-Scope, Marker Zoom, Bottom Zoom or Bottom-Lock
  • New Bottom Discrimination Display mode available (BBDS1)
  • FURUNO Free Synthesizer (FFS) transceiver to let you choose any two operating frequencies from 28 to 200 kHz (DFF3)
  • Audio and visual alarms alert you whenever preset limits are met for water depth, water temperature and fish echoes
  • Two selectable automatic gain control modes: Cruising and Fishing
  • IP address is automatically assigned for true Plug and Play installation

FURUNO Digital Filter (FDFTM) Fish Finder

FURUNO Digital Filter (FDF™) fish finders feature advanced filtering capabilities and digital auto tuning, which eliminates noise, while delivering the ability to spot individual fish with clarity, accuracy and detail. Whether it is used for shallow or deep water, FURUNO FDF™ fish finders give you what you would expect from a fish finder at all times.


Find More Fish With TruEcho CHIRP™ Fish FInder - DFF1-UHD

An advanced technology for professional or enthusiastic fisherman.Designed to operate over a broadband range of frequencies utilizing a broadband transducer, the TruEcho CHIRP™ network sounder DFF1-UHD delivers significant advancements in signal clarity and target definition. The clear presentation of the sounder marks individual game fish and bait fish, even when tightly schooled together.

TruEcho CHIRP Fish FInder

ACCU-FISH TM (Fish Size Analyzer)

FURUNO's award winning networkfish finders offer a unique fish size analyzer function, ACCU-FISH™.

The ACCU-FISH™ algorithm analyzes echo returns to compute individual fish size and show it on the screen.

In some instances, fish size indicated on the NavNet TZtouch may differ from its actual size. Please carefully read the operator's manual prior to utilizing this feature.

*ACCU-FISH™ is capable of detecting individual fish at the depth of 2 m down to 100 m and computing the fish size of those ranging from 10 cm to 199 cm.


Bottom Discrimination Display (with BBDS1 only)

Utilizing input from new Network Fish Finder BBDS1, the bottom discrimination display will be shown in the following four categories; "Rocks", "Gravel", "Sand" and "Mud", either in dedicated graphics or colors. This information is helpful in spotting the rich fishing ground where you can boost your catch of the day.


Sensor Lineup

  DFF1-UHDDetail DDF1Detail BBDS1Detail DDF3Detail
Frequency Dual frequency
50±20 & 200±25 kHz
Dual frequency
50 kHz and 200 kHz
The synthesized transducer
works with dual frequencies
between 28 and 200 kHz
Range Scale 8 basic range scales
customized upto 1,200 m
8 basic range scales
customized upto 1,500 m
Accu-Fish™ Available
Bottom Discrimination Available N/A Available N/A
Power Supply 12-24VDC
Transducers 1 kW 600 W/1 kW 1, 2 or 3 kW