You would like to determine the serial number of the Sunny WebBox.
After entering the individual IP address* of your device as a URL in your browser (e.g. Internet Explorer or Mozilla Firefox), you will see the homepage of your communication device. In the bottom status bar on the page, the serial number is displayed (together with the current firmware version).
You can also determine the serial number using the type label on the underside of the device.
*Standard IP address of the Sunny WebBox: 192.168.0.168