Tech Specs
In The Box
Mounting gasket
Mounting template
Four 8-gauge, self-tapping screws
Two screw covers
Dust cover
8 meter network/power cable
Manual & Warranty
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
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Tech Specs
In The Box
Mounting gasket
Mounting template
Four 8-gauge, self-tapping screws
Two screw covers
Dust cover
8 meter network/power cable
Manual & Warranty
Trade-In
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Overview
Garmin Fusion Apollo MS-ERX400 Wired Remote With Ethernet Connectivity
Introduction
The Garmin Fusion Apollo MS-ERX400 wired remote puts boat audio control at your fingertips with a compact interface designed for marine environments. This remote connects directly to your Garmin Fusion Apollo Series audio system via single-cable Ethernet, eliminating the need for wireless pairing while delivering reliable, lag-free control over multiple audio zones anywhere on your vessel.
Key Features
- 1.4-inch optically bonded LCD display with color screen and anti-glare properties for readability in direct sunlight
- Single Ethernet cable connection provides both power and data, simplifying installation with one cable run
- Multi-zone audio control across your boat's entire Fusion Apollo stereo network from a single control point
- Full Apollo Series compatibility for seamless integration with existing Garmin marine audio systems
- IPX6 and IPX7 water resistance rating engineered for saltwater spray, washdown, and splashing exposure
- Precision rotary control knob allows intuitive adjustment of volume, track selection, and zone switching
- Flat or flush-mount installation options for flexible placement on consoles, walls, or dashboard surfaces
Data Insights
Wired Ethernet connectivity on the MS-ERX400 eliminates the latency and dropout issues common in wireless marine audio remotes. The display clearly renders song metadata, playlist position, and multi-zone status simultaneously, allowing drivers and passengers to manage audio without distraction. Marine-grade materials and sealing withstand UV exposure, vibration, and salt spray environments typical of saltwater boating.
Usage Instructions
Install the remote by running the single Ethernet cable from your Apollo Series stereo head unit to the desired location on your boat. Connect the cable to the remote's Ethernet port; power draws from this connection automatically. Navigate your music library using the rotary knob, press to select tracks, and use the physical buttons below the display for play, pause, rewind, and forward functions. Access audio zone controls and settings through the on-screen menu to customize playback for different deck areas or cabin spaces.
Design & Material
The Apollo MS-ERX400 combines a compact profile with a modern, understated aesthetic that suits contemporary boat interiors. The remote's curved housing and matte black finish integrate cleanly into marine consoles without protruding unnecessarily into helm space. All materials selected for durability and corrosion resistance in salt and fresh water environments.
- Optically bonded LCD glass reduces internal reflections and glare even in high-noon sunlight conditions
- Marine-grade housing engineered to resist saltwater corrosion and UV degradation
- Seamless Ethernet integration with Apollo Series systems via standard cat-5 or higher cabling
- Precision-machined rotary control knob offers tactile feedback and smooth volume adjustment
- Compact footprint designed for helm consoles and bulkhead installations where space is limited
- Color display with intuitive interface shows active zone, song metadata, and system status in real time
Final Verdict
The Garmin Fusion Apollo MS-ERX400 delivers reliable, hardened audio control for boaters seeking a wired alternative to wireless remotes. Its Ethernet connection ensures zero dropouts, the 1.4-inch display provides essential feedback without bulk, and the marine-rated construction withstands saltwater conditions. If you're running a Fusion Apollo audio system and need multi-zone remote control that won't fail at a critical moment, this remote is the dependable choice for your boat.





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