Noxon A120 Bedienungsanleitung Seite 61

When prompted, enter the current PIN code. The default PIN is "1234".
You can view and edit the current PIN on the Internet Radio in the
menu Select your desired mode in the main page. You may then
control the selected mode on your smartphone/tablet and on the
display of the device simultaneously.
NOTE: Be aware that if another smartphone/tablet with the app in the
same network have access with the device, the original connection will
be cut off.
EN 21