Furuno LS4100TM Fish Finder

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

What’s Included

• Fish finder unit
• Standard package components as supplied for this model