Garmin Fusion Apollo MS-ERX400 Marine Wired Remote, with Ethernet
Quick take
The Garmin Fusion Apollo MS-ERX400 is a compact wired remote for networked boat audio, meant to connect to an Apollo Series stereo network via Ethernet. If you want an easy, on-deck way to control audio by zone with PartyBus-Network capabilities and a bright 2.7-inch color screen, it’s a strong match. The main buying caveat is planning for installation and networking, since mounting spacers and longer network/power cabling may be required depending on your setup.
Pros and cons
Pros
- Bright 2.7-inch optically bonded color LCD with album art (anti-glare) for readable on-deck control.
- Wired Ethernet connection to Apollo Series stereo networks, enabling PartyBus-Network control.
- Ultra-shallow mounting depth (about 1.93 in / 49 mm) helps fit more locations on a boat.
- Marine-focused durability: IPX6 and IPX7 water resistance, plus Fusion True-Marine design with a 3-year limited consumer warranty.
Cons
- Best results depend on compatibility with an Apollo Series stereo network and the right network/wiring accessories.
- Installation may require additional spacer or connector/cable planning for larger boats or specific mounting choices.
What buyers think
Buyer-review evidence for this model is generally positive, with recurring themes around overall quality and the experience of integrating it into an Apollo/Fusion marine setup. Several comments highlight that installation can be straightforward, but that buyers sometimes need the recommended extra installation components (for example, an accessory installation kit/spacers). There are also mentions that cable length and the need for extra network/power connection parts can matter, especially on larger boats. Overall, the feedback pattern points to “works well when it’s set up correctly,” with the biggest friction being planning the installation kit and network cable requirements.
What this remote is for
The MS-ERX400 is built to give you intuitive audio control from a remote location on your boat. Rather than acting like a standalone marine receiver, it’s meant to plug into an Apollo Series stereo network using Ethernet. Once connected, you can manage your onboard audio by zone and take advantage of PartyBus-Network capabilities (the networked feature set that links compatible Fusion/Apollo components).
For buyers, that usually means the biggest decision is not “do I like the screen,” it’s “do I have, or am I building, an Apollo Series networked audio system?” If yes, this remote can simplify deck control and make the system feel more integrated.
Key features that matter day-to-day
Readable on-deck display
You get a 2.7-inch optically bonded color LCD with anti-glare support, plus album art visibility. On boats, that matters for quick track and source identification at a glance, especially in bright conditions.
Ethernet network control (PartyBus-Network)
Because it’s designed to connect over Ethernet to an Apollo Series stereo network, the remote is focused on reliable wired integration rather than pairing over short-range wireless. In practice, that can be a good fit for multi-zone setups where you want consistent control from multiple locations.
Ultra-shallow mounting depth
With a mounting depth of about 1.93 inches (49 mm), the remote is intended to be easier to fit in tighter mounting spaces than bulkier displays. It also supports multiple mounting styles (flush, flat, and surface mount), with the note that an optional accessory spacer may be required for certain surface mounting configurations.
Marine-rated durability
It’s rated IPX6 and IPX7 for water resistance, and it uses a Fusion True-Marine design. It also comes with a 3-year limited consumer warranty, which can be an important reassurance for an item mounted on a boat where exposure to spray is common.
Software updates when networking is available
If your boat audio system has compatible connectivity, the remote can support over-the-air software updates via the Fusion-Link app on a compatible smartphone or device. This requires connection to an external wireless router or an Apollo Series stereo network with Wi-Fi connectivity (additional equipment may be needed).
Installation and compatibility considerations
This model is purpose-built for Apollo Series networked audio, so compatibility is the first checkpoint. Before buying, confirm your plan includes Apollo Series networking (Ethernet) and the related cabling and network components needed to physically reach your mounting location.
Two practical issues commonly affect buyers: (1) mount fit, where an optional spacer or installation kit might be necessary depending on your chosen mounting method, and (2) cable planning, where the included cable length may not be enough for larger boats or longer runs. If you’re optimizing for a clean, reliable network connection, budgeting time to map cable runs (and identify any extra connectors/couplers you may need) is worth it.
Pros and cons summary
- Best for: Owners who already have, or are building, an Apollo Series networked marine audio system and want intuitive zone control from a remote location.
- Good fit if you value: A bright, readable color display, wired Ethernet network integration, and marine water-resistance for on-deck mounting.
- Consider carefully if: You need a plug-and-play remote for a non-Apollo setup, or you have limited access for routing cables and may not want to source extra installation or connectivity accessories.
Price and availability
This model is listed at $279.99 USD, but market availability can change. If you want to lock in pricing or stock, check the current listing details now. Buy on Amazon
Verdict
The Garmin Fusion Apollo MS-ERX400 is a high-value choice when your boat audio plan centers on an Apollo Series stereo network. It delivers a clear on-deck interface, wired Ethernet control with PartyBus-Network features, and marine-rated durability, with an added benefit of ultra-shallow mounting depth. The biggest “make or break” factor is installation and connectivity planning, so confirm spacer needs and cable reach before you commit.
FAQ
Is the MS-ERX400 a standalone marine stereo receiver?
No, it’s a wired remote designed to control audio as part of an Apollo Series stereo network via Ethernet.
Does it work with non-Apollo Fusion marine stereos?
It’s intended for use with Apollo Series stereo networks. Compatibility with other models should be confirmed before purchasing.
How deep does it mount?
It’s designed for a very shallow installation depth of about 1.93 inches (49 mm).
Does it have a touchscreen?
It uses a capacitive touch screen (with buttons for human input as part of the interface).
Is it water resistant?
Yes. It’s rated IPX6 and IPX7 and uses a Fusion True-Marine design for marine environments.
Do I need a separate network/router for software updates?
Over-the-air updates depend on having compatible external wireless networking or Wi-Fi connectivity through an Apollo Series stereo network, along with use of the Fusion-Link app on a compatible smartphone or device.
Will the included cables be enough on larger boats?
That depends on your cable run length. Buyers have noted that longer connections and additional installation parts may be needed for certain boats or setups, so it’s smart to plan your wiring route.
Specifications
| Product Title | Garmin Fusion Apollo MS-ERX400 Marine Wired Remote, with Ethernet, A Garmin Brand |
|---|---|
| Category | Electronics > Car & Vehicle Electronics > Marine Electronics > Marine Stereos |
| Brand | Garmin |
| Manufacturer | Garmin |
| Model Name | MS-ERX400 |
| Model Number | 010-02244-00 |
| Item Weight | 120 Grams |
| Compatible with Vehicle Type | Boat |
| Screen Size | 2.7 Inches |
| Additional Features | Anti Glare Screen |
| Connectivity Technology | Proprietary Ethernet |
| Map Types | North America |
| Audio Output Mode | Stereo |
| Mounting Type | surface mount |
| Touch Screen Type | Capacitive |
| Display Type | LCD |
| Human-Interface Input | Buttons |
| Compatible Devices | Smartphone, Tablet |
| Control Method | Remote |
| Are Batteries Included | No |
| Supported Satellite Navigation System | GPS |
| Item Dimensions L x W x H | 2.8"L x 4.32"W x 2.75"H |
| Built-In Media | Apollo™ ERX400 marine wired remote; Mounting gasket; Four 8-gauge, self-tapping screws; Two screw covers; Dust cover; Network/power cable; Documentation |
| UPC | 753759225919 |
| Mfr Part Number | 010-02244-00 |
| Warranty Description | 1 year limited warranty |
| Item Type Name | Marine Stereo |
Available variants
Style
- ERX400 Wired Remote
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