Usually there are two ways to get the 6 capital letters device code. You can find it on the device label of the Ezviz device.
Alternatively, for verified terminals, you can also find it in camera settings - About - Device QR code - Click verification code.
For the latest models, you may find it in camera settings - Device information - Verification code.
For additional assistance, feel free to contact support team by emailing at support@ezviz.com, our team love to help.