Humminbird HELIX 15 CHIRP MEGA SI+ GPS G4N CHO Display Only

The Humminbird HELIX 15 CHIRP MEGA SI+ GPS G4N CHO is a 15.4-inch control-head-only unit for anglers who already have a compatible transducer or are planning a custom Humminbird installation. MEGA Side Imaging+, MEGA Down Imaging+, Dual Spectrum CHIRP, internal Precision GPS, and AutoChart Live provide advanced charting and sonar functions, while NMEA 2000, Ethernet, Bluetooth, and WiFi support a connected system.

Key Features

- 15.4-inch HD widescreen display – Provides a very large workspace for charts, sonar, and multi-panel layouts.
- 1280 x 800 resolution – Gives the large screen enough detail for mapping and imaging information.
- MEGA Side Imaging+, MEGA Down Imaging+, and Dual Spectrum CHIRP – Supports side, downward, and conventional sonar views with a compatible transducer.
- Internal Precision GPS and AutoChart Live – Provides onboard positioning and user-created mapping functions.
- NMEA 2000, Ethernet, Bluetooth, and WiFi – Provides confirmed connection options for a larger Humminbird network.

Who Is This For?

This control head suits large fishing boats, tournament rigs, multi-display helms, and owners replacing a Humminbird display while retaining or separately selecting the transducer. Its size is useful when sonar and chart information must remain visible at the same time.

It is not ideal for small boats or buyers who want a complete ready-to-install bundle. The transducer is not included, and the 15.4-inch display requires substantial dash space.

Compatibility

Confirmed interfaces include NMEA 2000, Ethernet, Bluetooth, WiFi, internal Precision GPS, and AutoChart Live. The supplied information does not identify a specific compatible transducer, NMEA 0183, radar, autopilot, or third-party chartplotter. No named incompatible system was provided; verify Humminbird transducer and network requirements before purchase.

Technical Specifications

- Brand: Humminbird
- Model: HELIX 15 CHIRP MEGA SI+ GPS G4N CHO, 411320-1CHO
- Display: 15.4-inch HD widescreen
- Resolution: 1280 x 800 pixels
- Built-in sonar: MEGA Side Imaging+, MEGA Down Imaging+, Dual Spectrum CHIRP
- Transducer: Not included; control head only
- Networking: NMEA 2000, Ethernet, Bluetooth, WiFi
- GPS: Internal Precision GPS with AutoChart Live
- Warranty: 2-year limited warranty
- Origin: Designed and made in the USA

Warranty & Support

Humminbird provides a 2-year limited warranty. The supplied specifications do not state warranty exclusions or service procedures.

The HELIX 15 SI+ CHO is the control-head alternative to the bundled HELIX 15 SI+ G4N, offering the same 15.4-inch display class and network features without including a transducer. That makes it suitable for a planned replacement or custom transducer installation, but it shifts compatibility and additional hardware selection to the buyer. Choose it when you need a very large Humminbird display and already have a sonar plan.