NMEA0183 Wi-Fi Gateway

Bringing Instrument data into your apps


Connect your phone, tablet, laptop or PC to your boat’s instruments over Wi-Fi.
Get GPS, AIS and other data from your instruments into your apps and software, and send data out to your chart plotter or autopilot.

 NMEA Flexibility

The device sends and receives NMEA0183 data, the industry standard for many years, and still output by most newer instruments that use NMEA2000. All valid NMEA0183 sentences are supported. It will run at speeds from 4800bps (standard NMEA) to 38400bps (for AIS). The NMEA port is fully opto-isolated in both directions, and will tolerate inadvertent connections to the boat’s power supply.

 Network Flexibility

Supports simultaneous UDP and TCP connections. For a simple installation the device can act as a wireless Access Point (AP) that you connect your devices to, or if you have a router on board the device can be a client to the router. When acting as an AP, it also acts as a DHCP Server for easy setup of your phone or tablet.

 App Compatability

We have designed the device for maximum compatibility with your apps, with both TCP and UDP support, and the ability to change IP addresses and port numbers to match your app’s needs. This means that it will work with virtually all apps that use NMEA0183 over Wi-Fi.


Designed for boats in mind, it will run off a 12V or 24V DC supply, and tolerate voltages from 7 to 32V. Power consumption is just 70mA. It has reverse polarity protection, and an internal self-resetting fuse.


Standard WEP/WPA/WPA2 Wi-Fi security is used to keep your network secure, and the configuration pages are also password protected.


LEDs on the front panel tell you exactly what is going on. For configuration, just use the QR code to open your web browser, or type in the IP address, and you are led through the setup and configuration.


Compatability Fully NMEA0183 and RS422 compatible
Ports 1 input, 1 output
Speed 4800, 9600, 19200 or 38400bps,user configurable
Galvanic isolation 2500V
Talker voltage Differential, >2V into 100Ω
Talker current 60mA max
Listener voltage tolerance -9V to +14V continuous,-50V to +50V transient
Listener signal thresholds Differential > -0.01V: logic H; <-0.2V: logic L
Listener protection Short circuit and over voltage limit to 50V


Wi-Fi and Network
Wi-Fi Protocols 802.11b/g, 2.4GHz band
Wi-Fi Channels 1 – 16, user selectable in AP mode
Tx Power 802.11b: +20dBm; 802.11g: +17dBm
Rx Sensitivity 802.11b: -91dBm @ 11Mbps,
802.11g: -75dBm @ 54Mbps
Security WEP/WPA/WPA2. Password user settable.
Wi-Fi Mode Access Point (AP) or client station, user selectable
SSID Fixed in AP mode,settable in client mode
IP Address User settable IP address and subnet mask
DHCP DHCP server in AP mode. In client mode it may have a fixed or dynamic IP address
TCP Up to 3 simultaneous bi-directional connections. Optional timeout. User settable IP address and port number
UDP 1-directional broadcast or multicast with unlimited connections. User settable IP address and port number.
Voltage 7 – 32V DC
Current 70mA @ 12V
Protection Reverse polarity and short circuit protection. Internal 0.5A self-resetting fuse.
Size 138 x 64 x 31mm / 5.4” x 2.5” x 1.2”
Weight 100g / 3.5oz.
Material Black ABS enclosure; stainless steel fastenings
Protection IP40
Operating temperature
0 – 60° C / 32 – 140° F
Relative humidity
0 – 85% RH
Power / data terminals Screw clamps for 0.32-3.3mm2 /22-12AWG wires
Mounting 4x M4 / #8 Csk screws(not supplied)
Warranty 1 year return to base
Status and Configuration
Status LEDs
Power; System reset; NMEA In; NMEA Out; Wi-Fi
User configuration
Web browser interface formonitoring and configuration,password protected
Discoverability Device details are broadcast over UDP to allow suitable apps to configure themselves and connect
Command API Proprietary NMEA commands can be sent over Wi-Fi to query and configure the device