On the webpage below we post tutorials to explain the configuration and functionalities of the LoWi3 web server. You can download the extensive manual and abbreviated QS (QuickStart) manual here

1. Collect network settings

Before starting to link the LoWi server to your local WiFi network, you need the WiFi password but also a number of IP addresses in the range of your own WiFi network, viz.:

  • a fixed and free IP address for LoWi3
  • IP address subnet mask
  • IP Address Gateway
  • Port number

To determine the correct addresses you can go to the network settings of your PC and copy them there, or you can use the Windows  IP server scanner tool which you can download from our website.

IP server scanner

Once installed you can start server scanner via the shortcut on your PC worksheet. The tool shows the IP address, subnet mask and gateway of your PC at the top left.

Subnet mask (eg and gateway (eg you can take over, in the IP address of your PC (eg you change the 4th digit by a number between 2 and 254 and this number (eg you enter above the ‘test via ping’ button.
With the ‘test via ping’ button you can test whether this IP address is still available and if not, adjust the fourth number and test again, until you have a free IP address.
For the port number, choose a number between 8000 and 9000, e.g. 8111

In this way all necessary addresses are collected to enter them via the ‘REDIRECT ‘ page in your LoWi3 web server.

This server scanner tool can also be used to find the IP address of all already configured web servers in your network (LoWi, ReMI, MiLo, MEMo). The two buttons ‘Reboot’ and ‘Set IP’ only work for the MEMo web server.

You can see the summary in the video below:

2. Connect LoWi to your WiFi network.

The next step is now to temporarily put LoWi3 in “WiFi access point mode”, and then connect your PC to this ‘LoWi WiFi network’ and enter the collected IP addresses and WiFi password in LoWi3 via the REDIRECT page so that LoWi is connected in your network.

The procedure is as follows: Connect the LoWi server to the P1 port of the digital meter. As soon as your LoWi has started up and you see a blue LED light up every now and then, keep pressing the LoWi switch for about 4-6 seconds until the blue LED stays on continuously. LoWi is now temporarily a WiFi access point.

Note: If your LoWi module is already connected to your WiFi network and you still want to change these WiFi network settings: Reconnect LoWi to the P1 port and then within 3 seconds and after the first LED flash about 4-6 seconds on the LoWi switch keep pressing until the blue LED is solid.


Now that the blue LED is continuously lit, LoWi is a ‘WiFi access point’ and in the list of WiFi networks on the laptop or tablet you will find the ‘2WIRE-LoWi’ network. Select this network. If you are asked for a password: ‘adminLOWI’.

After 1-2 minutes, a login screen /REDIRECT page will automatically appear in your web browser (or surf to from the ‘2WIRE-LOWI’ network itself). On this REDIRECT page we can then choose a WiFi network, enter WiFi password and the collected IP addresses.

In the video below we have gone through all the steps in full.

TROUBLESHOOT: It is very important that, especially during this one-time configuration, LoWi and the PC and the WiFi router with internet access are in close proximity and that a stable WiFi connection is available. If the digital meter is too far away, I occasionally use the P1 adapter cable, because this way I bring LoWi closer to the WiFi router during this process. If it doesn’t work with the PC, try with a laptop or smartphone. If you are not a hero with WiFi networks yourself, ask for help from an acquaintance. If you think you are doing all the steps correctly and that there is something wrong with the module, you can still order a ‘review module’.


3. LoWi3 functionality


Lowi has 16 log channels and you can fill these with: P1 meters, manually entered meters or MQTT meters. By default, all possible P1 meters are on.


MQTT connection:

LoWi3 has the possibility to interconnect various 2-WIRE web servers with their linked meters (LoWi3, ReMI, MEMo3)  as well as a number of separate WiFi modules (LeON, THEo, Plug) via MQTT over the internet. The implementation is very simple and the possibilities are enormous. The diagram below provides an overview with a number of links.


To be able to use this extra functionality ‘link over the internet’ you need a license on an MQTT broker. As a private user it is best to subscribe to the MQTT broker from 2-WIRE, as an OEM customer you can use your own MQTT broker.

Activate MQTT:

In the LoWi3 setup page, check the option ‘MQTT ENABLE” and the input field for MQTT will open. Here you can enter the MQTT broker URL and the MQTT token of your account. Or if you have your own MQTT broker, you can also enter a login and password instead of a token.

Every 2-WIRE module that you want to connect to this LoWi3 via MQTT will receive the same MQTT account settings. With ReMI and MEMo3 you can enter this via the setup webpage, with LeON, THEo and PLUG you can enter this via the Redirect page during the connection to your WiFi network.

Once a module is linked to MQTT, it will automatically upload (publish) all its log channels to the MQTT broker with every change. For example, a LoWi3 has up to 16 log channels, MEMo3 has up to 64 log channels, THEo has one log channel,… which are all uploaded ‘live’ with every change.

Read MQTT log channels( Subscribe):

To create an MQTT log channel, choose MQTT at ‘channel type’.
Under ‘Device id’ comes the MAC address of the linked mode, while ‘Para1’ refers to the desired log channel in that module:

  • LeON, THEo , PLUG only have one log channel so enter number ‘1’ here. As unit ‘UNIT’ choose ‘IAQ’ for THEo, ‘kWH’ for WiFi PLUG
  • LoWi3 , ReMI have up to 16 log channels, MEMo3 has up to 63 log channels so if you want to subscribe data here you enter the desired log channel number along with the correct ‘UNIT’.

At ‘name’ you choose a name that is recognizable to you.

In this way you can read data from a module that is installed anywhere in the world.

In the video below we show it briefly or you can also read it in the MQTT manual.


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