Furuno LS4100TM Fish Finder
$207.00
Furuno LS4100TM Fish Finder is a compact 5-inch dual-frequency fish finder with 50/200 kHz operation, 300W RMS output, and dedicated bottom-fishing tools such as White Line and Bottom Lock.
Overview Furuno LS4100TM Fish Finder
Furuno LS4100TM Fish Finder is built for smaller vessels that want a dedicated fish finder with dependable depth and fish target presentation. Its compact 5-inch format keeps installation straightforward while still providing the core sonar tools needed for day-to-day fishing use.
The unit combines dual-frequency operation, practical monochrome screen visibility, and useful fishing modes that help interpret bottom structure and fish activity. It is a good fit for operators who prefer a dedicated fish finder rather than an all-in-one multifunction display.
Key Features
- Dual-frequency 50/200 kHz sonar: Supports shallow-water detail and wider deep-water coverage depending on frequency selection.
- 300W RMS output: Provides reliable bottom and target detection in a compact unit.
- 5-inch high-resolution display: Presents fish and bottom returns clearly for everyday fishing use.
- White Line and Bottom Lock: Help identify fish close to bottom structure and improve bottom-fishing interpretation.
- Mini Navigator support: Adds waypoint and position functions when connected to a compatible GPS source.
Applications
- Small-boat fishing where a simple dedicated fish finder is preferred.
- Coastal and nearshore depth monitoring with dual-frequency flexibility.
- Bottom fishing where structure reading and fish separation are important.
Specifications
| Model | LS4100TM |
| Product type | Fish finder |
| Display size | 5-inch monochrome LCD |
| Display resolution | 240 x 320 |
| Frequency | 50/200 kHz |
| Power output | 300W RMS / 2,400W peak-to-peak |
| Depth scale | Up to 3,000 ft |
What’s Included
- Fish finder unit
- Standard package components as supplied for this model
Frequently Asked Questions About Furuno LS4100TM Fish Finder
What kind of onboard use is Furuno LS4100TM Fish Finder built for?
Furuno LS4100TM Fish Finder is a compact 5-inch dual-frequency fish finder with 50/200 kHz operation, 300W RMS output, and dedicated bottom-fishing tools such as White Line and Bottom Lock. It is suited to small-boat fishing where a simple dedicated fish finder is preferred.
What sonar feature stands out on this unit?
This unit centers on dual-frequency 50/200 kHz operation for balancing shallow detail and deeper coverage. The result is a focused sonar display for bottom detail, fish marks, and underwater structure rather than a screen built around unrelated multifunction features.
Does this unit support GPS or mapping functions?
The source content mentions navigation functions when connected to a compatible GPS source, so this unit can support position-based use without being described as a full chartplotter. The source content also shows Display size 5-inch monochrome LCD and Power output 300W RMS / 2,400W peak-to-peak in the stated product data.
How does this model fit into real onboard fishing use?
This model suits small-boat fishing where a simple dedicated fish finder is preferred. It also suits coastal and nearshore depth monitoring with dual-frequency flexibility; the stated product data also includes Display size 5-inch monochrome LCD and Power output 300W RMS / 2,400W peak-to-peak in the stated product data.
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