Support for devices by Legrand in Home Assistant is provided by the Netatmo integration.
Legrand devices are either rebranded devices or devices that share a common communication protocol, making it possible to use them with the Netatmo integration.
Adding Legrand to your Home Assistant instance can be done via the user interface, by using this My button:
Legrand can be auto-discovered by Home Assistant. If an instance was found, it will be shown as “Discovered”, which you can select to set it up right away.
If there wasn’t any discovered automatically, don’t worry! You can set up a manual integration entry:
Browse to your Home Assistant instance.
In the sidebar click on Settings.
From the configuration menu select: Devices & Services.
In the bottom right, click on the Add Integration button.
From the list, search and select “Legrand”.
Follow the instruction on screen to complete the set up.
For more documentation on how to use Legrand in Home Assistant, please refer to the Netatmo integration documentation page.