1. Matter supports only control in the LAN. When you add a Tuya Matter device, the Tuya App identifies it. After you scan the QR code of the device or enter the pairing code, the device is paired. Then, the App automatically activates it in Tuya IoT PaaS and synchronizes the device status.
2. When you add a non-Tuya Matter device, the Tuya App identifies it. After you scan the QR code of the device or enter the pairing code, the device is paired. Then, the device is managed in the LAN by Matter. The control panel of the device displayed in the Tuya App is a general-purpose panel.