QK-A034 Bi-directional WiFi to NMEA 2000 Gateway Multiplexer with NMEA 0183 and SeaTalk input options

£180.00 (£150.00 excl. VAT)

Seamless connection of NMEA 0183 and Raymarine SeaTalk1 sensors, NMEA 2000 equipment and WiFi and USB devices.

  • Combines up to 3 NMEA 0183 and SeaTalk1 inputs, with a NMEA 2000 network, USB and WiFi data.
  • Bi-directional WiFi and  USB
  • Converts the combined data to NMEA 2000 for your chart plotter and other NMEA 2000 devices.
  • A powerful MPU converts, combines, filters and routes your data with minimal user configuration required.
  • Filtering functionality removes redundant or unnecessary data
  • Routing functionality avoids data over-flow

In stock



The QK-A034 is a sophisticated NMEA 2000 to WiFi and USB multiplexer, with added flexibility for your growing system.

Enjoy a direct WiFi link to your NMEA network data, for convenient and flexible access to data and as the WiFi connection is 2-way, you can also use it to send data, including Waypoints to your chartplotter and autopilot and VHF messages.


In addition to bi-directional NMEA 2000 to WiFI and USB,

the A034 provides a seamless connection of NMEA 0183 and Raymarine SeaTalk1 input devices to your NMEA 2000 network,WiFi and USB devices.


INPUTS (listener ports)OUTPUTS (talker ports)
NMEA 2000NMEA 2000
3 x NMEA 0183
1 x SeaTalk1


The A034 gives you:

  • NMEA 2000 to WiFi and USB, 2-way communication
  • 2-way WiFi and USB gives you control and data inputs from WiFi and USB devices
  • Additionally, combined data from up to three NMEA 0813 inputs and SeaTalk1 inputs can be added into the data stream
  • Filtering options
  • Routing options
  • Convenient combined marine data over WiFi on your mobile devices, USB to PC and NMEA 2000 to your chart plotter


Typical System Setup

The A034 is a flexible device and the connections can be tailored to your individual setup.

Below is an example setup. Whether you input devices (eg.GPS, AIS, wind. depth and other sensors) are SeaTalk1, NMEA 0183 or NMEA 2000, simply connect them to the correct input connection.



The A034 can be used out of the box for standard functionality or configured for additional sophistication.

Without Configuration: The multiplexer converts and combines data received on the listener ports and sends this data to NMEA 2000, WiFi and USB simultaneously. Default Baud rates: NMEA input 1 and 2: 4800bps and NMEA input 3: 38400bps

With Configuration:

  • Configurable NMEA Baud rates
  • Linking to a second onboard WiFi network if desired
  • USB test data input
  • Filtering options, each input has a flexible filter that can be configured to pass or block specific sentences. This helps to avoid conflict if 2 input devices are inputting the same data type (eg GPS), and frees up bandwidth, significantly reducing the possibility of data overflow and the resulting loss of data.
  • Routing options, the powerful routing feature allows the NMEA, SeaTalk and WiFi input data to be routed from any input to specific outputs.


WiFi Connection

The WiFi module is set for direct Ad-hoc WiFi connection as default, with no need for a router. The SSID and password can be changed through QK-A034 configuration software, increasing security and memorability.

Up to 4 wireless devices can connect directly to the A034 in Ad-hoc mode.

QK-A034 can also be connected via Station mode using the Configuration software. This allows for greater range and remote access, as well as additional multi-device access.

The WiFi can also be disabled and be placed on Standby mode if desired.


Bi-directional WiFi: With 2-way WiFi, the A034 allows for wireless connection to autopilots and other NMEA devices, giving you the freedom to navigate, monitor and control from your iPad, iPhone, Android tablets and other WiFi enabled devices.

Bi-directional USB:  2-way USB the A034 allows the user to send instructions and data through USB from a laptop to all connected outputs. Frequently used to control autopilots and other NMEA devices from OpenCPN and other PC software, allowing the user to navigate, monitor and control from your laptop. This feature also allows for sending of test data for system testing and analysis.




  • Bi-directional WiFi, USB and NMEA 2000
  • Combines and inputs data from up to three NMEA 0183 input devices and one SeaTalk input
  • SeaTalk to NMEA converter (converts common SeaTalk1 data types to NMEA 0183 sentences)
  • Galvanically isolated NMEA 0183 and SeaTalk input ports. (also called opto-isolation. Galvanically isolation prevents unwanted currents between devices, preventing equipment damage and interference with radio signals
  • NMEA 0183 to NMEA 2000 converter (converts common sentences to PGNs and visa-versa)
  • WiFi: Ad-hoc mode allows up to 4 devices to connect to the internal WiFi module simultaneously
  • WiFi: Station mode allows for the connection of the A034 to your router/ access point for greater number of wireless users and WiFi range.
  • WiFi: Standby option(disable WiFi)
  • WiFi and USB input and output of combined data in NMEA 0183 sentence format
  • WiFi and USB additionally output NMEA 2000 network PGNs (in both 0183 sentences and PCDIN format)
  • Compatible with Windows, Mac, Linux
  • Compatible with Android and iOS via WiFi
  • Filtering allows for overflow reduction and additional configuration.
  • Routing reduces the risk of data over-flow.


More technical info

  • Configurable NMEA 0183 baud rates (4800, 9600, 38400bps)
  • Compatible with NMEA 2000 Chart plotters, Windows, Mac OS X, Linux systems (Full functionality, though the configuration is through a Windows application)
  • Compatible with Android and iOS (All functionality excluding USB connection and Configuration)
  • Connectable to older RS232 products through optional Protocol Bridge (AS03). For more information, see below.


FAQ – Will I need a Protocol bridge to connect NMEA 0183 devices? The answer is probably not…

This product uses the NMEA 0183-RS422 protocol (differential signal), however some older chart plotters or instruments may use the older NMEA-RS232 protocol (Single-ended signal).

To ensure A034 compatibility with any older NMEA0183 device, check if your device uses NMEA0183 RS422 or RS232

  • NMEA0183 RS422 (differential) devices’ wiring is compatible ‘out of the box’.
  • NMEA0183 RS232  (single-ended) devices will require a Protocol Bridge (AS03) to connect your wiring.

Connecting the A034 to an older (RS232) instrument or chartplotter is not a problem, simply order the QK-AS03 Protocol Bridge. Our QK-AS03 Protocol Bridge connects NMEA-RS232 wiring to MNEA0183-RS422 and vice versa, using a simple ‘Plug ‘n’ Play’ connection, with no setup or configuration needed.

You will probably need an AS03 if you are connecting to an older Garmin, Raymarine or Standard Horizon device. The easiest way to check, is to look at the input/output connections on the device that you will connect the multiplexer to. If the input/output connections on your device (Chart plotter, depth reader, etc.) have a TX, RX or GND connection, use a protocol bridge.

If in doubt contact us for advice.


What’s included?

  • 1 x QK-A034
  • 1 x USB-B cable (1m)
  • 1 x NMEA 2000 cable
  • 1 x CD containing Manuals, Configuration Software and drivers
  • 1 x Setup Guidebook


Available to add to your order:


Help and Support

For any technical questions regarding this product, you can visit the forum at https://www.quark-elec.com/forum/ and ask us your question,  it’s regularly checked by our technical team and your question may already have been answered there.

Alternatively, contact us directly, with details of your set up and we will be happy to help.

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Technical Info

Technical Info


QK-A034 has the following electrical connections/indicators:

  • 1x NMEA 2000 Bi-directional network interface
  • WiFi Bi-directional interface, direct to and from, up to 4 WiFi devices’ connections
  • USB Bi-directional interface
  • 3x NMEA 0183 inputs for adding NMEA 0183 data to the above
  • 1x SeaTalk1 input
  • Momentary push buttons are used on the terminals; no screwdriver is needed for connection
  • LED lights: indicating SeaTalk and NMEA In, NMEA Out, USB, WiFi and Power


INPUTS (listener ports)OUTPUTS (talker ports)
NMEA 2000NMEA 2000
3 x NMEA 0183
1 x SeaTalk1
Manual / Drivers

Manual / Drivers


Setup Guide

QK-A034 Basic Setup Overview.



Detailed technical specifications. (The ‘Technical Application Note’)



The QK-A034 comes preloaded with drivers.

The device driver is a file that lets the computer know the configurations and specification of the AIS receiver. In case you’ve had software issues, the driver can be downloaded below.


Configuration Software

Check the setup guide for more information.

Multiplexer comparison guide

Multiplexer comparison guide

For mobile view and PDF click here


DescriptionFunctionBi-directional Multiplexer with SeatalkTM converter

Combines up to 3 NMEA 0183 inputs with SeatalkTM, WiFi and USB input

Outputs NMEA 0183, WiFi and USB
NMEA 0183 x 3 to 2000 Gateway with SeaTalkTM converter

Combines up to 3 MNEA 0183 inputs with

Outputs WiFi, USB and
MNEA 2000
NMEA 2000/0183

Bi-directional Gateway

Combines NMEA 2000/0183

Outputs WiFi, USB and NMEA 2000/0183

(AIS and non AIS versions)
NMEA 0183 and SeaTalkTM multiplexer

Combines up to 3 MNEA 0183 inputs with SeaTalkTM

Outputs WiFi, USB and
MNEA 0183
Dual channel AIS receiver, multiplexer, SeaTalkTM to NMEA converter

Combines AIS, GPS and SeaTalkTM

Outputs WiFi, USB and
NMEA 0183
Dual channel AIS
receiver, multiplexer

Combines AIS, and
NMEA 0183

Outputs WiFi, USB and NMEA
NMEA 0183 input✓x3✓x3✓x3✓x1
NMEA 2000 input
SeaTalkTM bus input (SeaTalk
AIS receiver integrated
(requires GPS antenna)
✓ Dual channel

BNC connection
✓ Dual channel

BNC connection
GPS module integrated
(requires GPS antenna)


SMA (A026 only)
USB (NMEA 0183 format) output✓2 way ✓2 way
NMEA 0183 output (RS422)✓x2
NMEA 2000 network
Power source Powered through12V - 35VN2K bus (12V)N2K bus (12V)12V - 35VSeaTalkTM bus (12V)USB
✓(A024) AIS+NMEA
WiFiAd-hoc and Station modes✓2 way ✓2 way
Option to disable WiFi
Configuration through USB
port. Configuration requires
Windows PC
devices and
through USB
Chart Plotters
* SeaTalk™ is a registered trademark of Raymarine.

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