Go into your Home Assistant integrations page and click Add Integration. Then click "Add Matter Device"
Click Proceed
Click submit and make sure the "Use the official Matter Server Supervisor add-on" is checked and click submit
It will then setup the addon and the integration. This will take several minutes.
Click Finish
On the plug you want to add you need to have it on the same network as your Home Assistant box. Adding it between different VLANS is not supported by Matter.
Go to the wifi plug IP address in your browser and we need to set a few things on the Matter settings on the plug itself. Click Configuration and then Matter.
In the matter menu you need to expose the relay to the matter system. Under the "Add to Configuration" menu set the name in the "Name" field (this is what you see in Home Assistant and other Matter hubs), set the type to Relay, and in "Parameter" set that to 1. Click Create new Endpoint.
Now at the top click "Commissioning open" and then save.
It will go to the home screen and display the pairing code and QR code.
Your phone or tablet you are using MUST BE ON THE SAME WIFI AS THE PLUG. This guide was written using an Android device so your screens when it gets to the pairing may look slightly different if you are on an iPhone.
Now on your Phone or Tablet with your home assistant app installed and signed into your HA box go to the integrations page and tap "Add integration" and then "Add Matter device"
Select "No, it's new"
Click "Im Ready"
Click "Open camera here" and scan the QR code on the screen that the wifi plug is showing. We recommend having the EZplug webUI displayed on another device (phone, pc, tablet, etc) so you can scan it with the device you are using.
It will take about 30-45 seconds to connect to the device and add it.
Once done it will show "Device connected"
The Matter integration will now show your plug in the list. If there are no entities listed go to the plug webUI and restart it to force it to update.
If you tap on the plug you just added you can see its relay with an on/off toggle