Technical data
Furuno offers a wide selection of multi sensors for use with our recreational fish finders. Multi sensors, also referred to as triducers,
combine standard 50/200 kHz transducers with speed and temperature functions into a single package. The benefit of having a multi
sensor is ease of installation, since there is only one unit to be installed that provides depth, speed and temperature functions. Furuno
offers a variety of multi sensors that are cost-effective and very efficient for most recreational applications.
Furuno speed and temperature sensors offer highly accurate data for your fish finder or digital temperature display. Unlike Smart
Sensors, these sensors require a connection to specific equipment, either as an insert for a matching transducer or as a component
of a dedicated system, such as the T-2000 Digital Temperature Display.
Model Functions Housing Style
ST-01PTB Speed and Temperature (+/ - 1 degree ) S63 Plastic Clip On (requires Transom Mount Bracket, part # AIR-020-058)
ST-02MSB Speed and Temperature (+/ - 1 degree ) B17 Bronze Thru-Hull
ST-02PSB Speed and Temperature (+/ - 1 degree ) P17 Plastic Thru-Hull
CAT2000/TH Temperature (+/ - 1 degree ) Bronze Thru-Hull
Speed & Temp Sensors
Multi Sensors - 50/200kHz
Transducer
Part number
Power
Rating
Beam
Angle
Housing
Type
Plug
Type
Mount
Type
Cable
Length
Temp Speed Fairing Block Compatible Models
Dual Frequency 200 & 50 kHz Multi Sensors
525STID-PWD 600W 45/11 Plastic 10 Pin TM 10 M YES YES na DFF1, LS4100, LS6100, FCV627,
FCV587, GP1670F/GP1870F
525STID-MSD 600W 45/12 Bronze 10 Pin TH 10 M YES YES AIR-033-428
AIR-033-476**
(HSFB included)
DFF1, LS4100, LS6100, FCV627,
FCV587, GP1670F/GP1870F
525STID-MSD7 600W 45/12 Bronze
7" Stem
10 Pin TH 10 M YES YES AIR-033-080** DFF1, LS4100, LS6100, FCV627,
FCV587, GP1670F/GP1870F
6 11
Transducer
Part number
Power
Rating
Beam
Angle
Housing
Type
Plug
Type
Mount
Type
Cable
Length
Temp Speed Compatible Models
Variable Frequency, High Power
R209TIDN 2/3KW * Urethane NC TH 50 Feet YES NO DFF3, FCV295, FCV1150, FCV1200 and BB Models
R299ID-IHN 2/3KW * Urethane NC IH 50 Feet NO NO DFF3, FCV295, FCV1150, FCV1200 and BB Models
R309TIDN 2/3KW * Urethane NC TH 50 Feet YES NO DFF3, FCV295, FCV1150, FCV1200 and BB Models
R399ID-IHN 2/3KW * Urethane NC IH 50 Feet NO NO DFF3, FCV295, FCV1150, FCV1200 and BB Models
CA82B-35R 2KW * FRP NC T 50 Feet NO NO DFF3, FCV295, FCV1150, FCV1200 and BB Models
*Beam Angle varies with frequency - higher frequency = narrower beam angle
Variable Frequency Transducers
The variable frequency of these transducers allows you to change the beamwidth and depth capabilities. If you are bottom fishing in 200'
of water, the narrow high-frequency beam will display extreme bottom detail and fish holding tight to structure. If you are fishing in deep
blue water, the wider, low-frequency beam will not only give deep-water bottom detail, but more importantly show you more of what is
around your vessel, including bait which may attract game fish. Because the bandwidth covers a continuous frequency spectrum, next
generation fishfinders utilizing Furuno Free Synthesizer (FFS) technology can be made “tunable”, so you can “dial-in” the best frequency
Standard vs. High Performance
When you purchased your fish finder you made an invest-
ment, and to get the most out of that investment you will
need to match it with the right transducer. Once you've
selected your mounting method (In Hull, Through Hull or
Transom Mount), you will need to select the right trans-
ducer. The best transducer for your needs will depend on
a number of variables but there are some constants that
should be considered and we'll go over those now.
Most standard transducers are designed for recreational
fish finders and generally have a single element that reso-
nates alternately at 50 and 200 kHz. Although these trans-
ducers are effective and inexpensive, greater performance
can be had by matching your recreational fish finder with a
high-performance transducer. These transducers are rated
for a greater power output and contain an array of 50kHz el-
ements along with one or more large-diameter 200kHz ele-
ments. An array of 50kHz elements allows for a very tight
beam pattern, meaning there will be more energy on-target
to produce return echoes. Also, the greater surface area
of this array makes the transducer more sensitive to return echoes,
enabling greater target resolution on the screen. The same is true of
having one large, dedicated 200kHz element - its tighter beamwidth
and greater sensitivity create a better performing transducer at all
power outputs.
For example, a typical recreational fish finder will output 600 watts of
energy and is designed to function with a matching triducer rated at
600 watts. Pairing this fish finder with a high-performance transducer
rated at 1,000 watts will drastically improve the performance of your
fish finder.
Getting the most
out of your Fish Finder
Here is the same 600 watt sounder
utilizing the 525T-HDD high perfor-
mance transducer. The darker color
illustrates the enhanced sensitivity
available for most sounders.
Above is an actual screen shot of a
600 watt Furuno sounder utilizing the
525ST-MSD, a standard 50/200kHz
transducer.
Smart Sensors connect directly to a variety of Furuno
equipment, enabling you to upgrade your transducer
without sacrificing speed and temperature information.