When the multiplexer is powered up, it creates a wifi network to
which you can connect. When you are using the multiplexer for the
first time, it is advisable that you press and hold the button
labelled "Boot" on the module to force Default Factory Settings.
If you do that, you will be sure that the name of the created
network is NMEA4WIFI and the password is 12345678. It is also
advisable to switch off automatic connection to other existing
wifi networks and to disconnect mobile data. Then try to connect
to the NMEA4WIFI network. When you get a connection, you type
192.168.4.1 in the navigation bar of a browser to obtain a Setup
Web Page. At the top, the Web Page shows the parameters that can
be set followed by their description.
In this location of the Web Page follows the description of the parameters that
we omitted here and at the end there is a button to Set Factory Default settings.