Furuno 235-MSLF Long Stem Bronze Thru-Hull Depth/Temp NMEA2000 Smart Sensor
Furuno 235-MSLF Long Stem Bronze Thru-Hull Depth/Temp NMEA2000 Smart Sensor — Product description
Upgrade your vessel's navigation with the Furuno 235-MSLF, a robust long stem bronze thru-hull transducer engineered for crystal-clear depth readings and accurate water temperature data. Ideal for serious boaters who demand reliability in demanding marine environments, this smart sensor integrates seamlessly into NMEA 2000 networks, delivering real-time insights that enhance safety and performance on the water. Whether you're navigating shallow coastal waters or tracking fish in deeper zones up to 180 meters, its high-frequency 235 kHz design provides exceptional resolution without the clutter of traditional sonar.
Advanced Features for Superior Marine Sensing
The Furuno 235-MSLF stands out with its precision-crafted bronze housing, built to withstand the corrosive punch of saltwater while maintaining beam integrity across hull deadrises up to 28 degrees—perfect for planing hulls when paired with the included fairing block. Its urethane acoustic window ensures optimal sound transmission, capturing updates every second for responsive depth and temp monitoring.
- High-Resolution Beam: 235 kHz frequency excels in shallow to mid-range depths (0.5 m to 180 m), offering sharp bottom detail for anchoring or structure detection.
- Integrated Temperature Sensing: Tracks water temps from -10°C to 40°C with ±0.5°C accuracy, vital for fishing pros monitoring thermoclines.
- NMEA 2000 Ready: Plug-and-play connectivity with a low LEN of 4, minimizing network load while sharing data across multifunction displays.
- Long Stem Design: Extends deeper into the water flow, reducing aeration and false readings during high-speed runs.
- Compact Installation: Fits 51 mm (2-inch) holes, with 6 m cable for flexible routing.
Power it with 9-16 VDC and enjoy efficient 200 mA draw—reliable even on extended trips without draining batteries.
Why Boaters Trust the Furuno 235-MSLF for Everyday Adventures
Beyond specs, this transducer transforms how you interact with your boat's ecosystem. Imagine pinpointing drop-offs for trophy catches or confidently maneuvering into uncharted bays—the 20,000 pulses per nautical mile deliver consistent pulse rates (5.6 Hz per knot) that cut through turbulence. Bronze construction laughs off galvanic corrosion, outlasting plastic alternatives in harsh conditions, while the pressure-rated design handles submersion up to 3 m during trailering or beaching.
For offshore anglers, the tight beam width minimizes side-lobe interference, focusing on what's directly below. Sailors appreciate the fairing's adaptability to V-hulls, ensuring dead-on readings without speed-induced noise. It's not just a sensor; it's your underwater eyes, simplifying diagnostics via NMEA 2000 for quick troubleshooting on the go.
Streamlined Installation Tips for Peak Performance
Installing the 235-MSLF is straightforward for DIY enthusiasts or pros. Drill a precise 51 mm hole below the waterline, forward of the prop for clean flow. Use the fairing block to match your hull's angle, securing it with marine sealant for a watertight bond. Route the 6 m cable away from engines to dodge interference, then snap into your NMEA 2000 backbone—no complex wiring needed thanks to smart sensor tech.
- Measure and mark hull location for maximum water flow exposure.
- Bed the thru-hull with polysulfide sealant; torque to spec.
- Fair the block flush, blending into the hull for hydrodynamic efficiency.
- Connect to network; calibrate depth offset via your display.
- Test at idle and planing speeds to verify beam stability.
Pro tip: In high-deadrise hulls, the fairing prevents cavitation bubbles from distorting readings, unlocking the full 590 ft range potential.
Versatile Applications Across Marine Pursuits
From sportfishing charters chasing billfish to weekend cruisers dodging shoals, the 235-MSLF adapts effortlessly. Pair it with Furuno chartplotters for overlaid depth shading, or integrate into Garmin/Raymarine setups via NMEA 2000 gateways. Its 3.9 kg heft signals durability, weighing in at just 8.7 lb for easy handling during installs. Shallow-water explorers love the 0.5 m minimum range for beaching alerts, while temp data informs lure choices or engine cooling checks.
Frequently Asked Questions
What makes the Furuno 235-MSLF suitable for high-speed boating?
The long stem design protrudes deeper into undisturbed water, paired with a fairing block that reduces aeration up to 28-degree deadrises, ensuring accurate depth readings even at planing speeds.
Is the temperature sensor reliable in varying water conditions?
Yes, it offers ±0.5°C accuracy across -10°C to 40°C, helping anglers locate bait balls or monitor for hypothermia risks during extended outings.
How does NMEA 2000 integration simplify my setup?
As a smart sensor, it plugs directly into the backbone with a LEN of 4, auto-configuring depth/temp data for sharing across compatible MFDs—no extra converters required.
What's the ideal depth range for this transducer?
It performs best from 0.5 m to 180 m, with 235 kHz providing high-res detail in shallows, outperforming lower frequencies in coastal or inland waters.
Can I install the 235-MSLF on any hull type?
It's optimized for displacements and planing hulls up to 28° deadrise using the fairing. For steeper angles, custom fairings may enhance performance.
Does the bronze housing handle saltwater exposure?
Absolutely—bronze resists galvanic corrosion far better than plastic, with a 3 m pressure rating for secure submersion during storage or transport.
How frequent are the data updates?
One update per second, with a pulse rate of 20,000 p/nm (5.6 Hz/knot), delivering smooth, real-time sonar without lag.
- 235KhZ
- Weight: 3.9 kg (8.7 lb)
- Acoustic Window: Urethane
- Hull Deadrise: Up to 28° with fairing
- Hole Diameter: 51 mm (2?)
- Data Update Rate: 1 per second
- Minimum Depth Range: 0.5 m (1.6?)
- Maximum Depth Range: Up to 180 m (590?)
- Pressure Rating: 3 m (10?)
- Pulse Rate: 20,000 p/nm (5.6 Hz per knot)
- Supply Voltage: 9 VDC to 16 VDC
- Supply Current: 200 mA
- Standard Cable Length: 6 m (20?)
- Temperature Sensor Accuracy: 0.5°C ( 1.8°F)
- Temperature Sensor Range: -10°C to 40°C (14°F to 104°F)
- NMEA 2000 Load Equivalency Number (LEN): 4
SKU: NVN-1002540
MPN: 235-MSLF
UPC: 611679330536
Technical specifications
| Brand | Furuno |
| Model | Furuno 235-MSLF Long Stem Bronze Thru-Hull Depth/Temp NMEA2000 Smart Sensor |
| SKU / MFR# | 1002540 |
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