Humminbird XPLORE 12 CMSI+ Fish Finder – 12" Display, Includes Transducer (4120201)
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Humminbird XPLORE 12 CMSI+ – 12" Full-HD Fish Finder with Transducer
The XPLORE 12 CMSI+ is the complete, ready-to-fish package in the XPLORE series — a full 12-inch Full-HD display paired with a MEGA-capable transducer included in the box. MEGA Side Imaging+ and MEGA Down Imaging+ deliver sharp, wide-coverage underwater imagery from the moment you hit the water, while Dual Spectrum CHIRP sonar provides reliable target separation at any depth. The Cross Touch® interface lets you navigate menus by touch or knob, whichever you prefer on the water.
If you already have a compatible Humminbird transducer installed and want to avoid paying for a duplicate, see the XPLORE 12 CHO – No Transducer (4120201CHO).
Mapping & Navigation
- Includes LakeMaster® and CoastMaster™ VX map card covering U.S. and Canada standard regions
- Compatible with Navionics® charts (sold separately)
- AutoChart Live: build real-time depth maps of your fishing spots on the fly
- Internal GPS with Humminbird Basemap built in
Sonar
- MEGA Side Imaging+ — wide, high-resolution side-scan coverage
- MEGA Down Imaging+ — detailed structure and bottom imaging directly below
- Dual Spectrum CHIRP Sonar — traditional sonar with narrow and wide beam modes
- Compatible with the MEGA Live 2 Live Sonar System (7103101) for real-time forward-facing target tracking (sold separately)
Connectivity
- One-Boat Network compatible — integrates with Minn Kota trolling motors for GPS navigation control and shallow water anchor deployment directly from the display
- Ethernet networking for multi-unit sonar sharing
- Bluetooth for wireless waypoint sync to the Humminbird app (up to 10,000 fish spots with custom colors and icons)
- NMEA 2000 networking built in
XPLORE Series Lineup
Compare the full XPLORE family to find the right fit:
- XPLORE 9 CHO – 9" Display, No Transducer (4120001CHO)
- XPLORE 9 CMSI+ – 9" Display, Includes Transducer (4120001)
- XPLORE 10 CHO – 10" Display, No Transducer (4120101CHO)
- XPLORE 10 CMSI+ – 10" Display, Includes Transducer (4120101)
- XPLORE 12 CHO – 12" Display, No Transducer (4120201CHO)
- XPLORE 12 CMSI+ – 12" Display, Includes Transducer (this unit)
Parts Desk Insights
Best use case: The XPLORE 12 CMSI+ is the right choice for new installations on a boat with no existing Humminbird transducer — everything you need to get MEGA imaging up and running is in the box. It’s also the better option when replacing an older, non-MEGA transducer, since the included CMSI+ transducer is already matched and tested for this unit.
CHO vs. CMSI+: If your boat already has a MEGA-capable Humminbird transducer installed, the XPLORE 12 CHO saves you the cost of a duplicate transducer. If you’re unsure whether your existing transducer is MEGA-capable, check the connector type and model number — standard CHIRP transducers will not unlock MEGA Side Imaging+ or MEGA Down Imaging+ on this unit.
One-Boat Network: Full trolling motor integration requires a compatible Minn Kota motor with i-Pilot Link or Ulterra/Ultrex platform. Confirm motor compatibility before assuming full GPS handoff functionality.
Screen size consideration: The 12" display requires adequate mounting depth and dash real estate. Measure your helm space carefully — the XPLORE 10 is a better fit for tighter console setups.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.