66.2 General notes on useNotes on use• These operating instructions always relate tooperation using the controls on the device. Functionsthat are only usable by app or remote control areexplained separately.• The buttons on the remote control and their functions(≙) correspond to the control buttons on the device.Adjusting volume / mute• Press [VOLUME +/–] on the device or the remote controlto adjust the volume.Alternatively, the volume may be adjusted using theUNDOK app (see Undok flyer).• Press on the remote control to mute the radio.Alternatively, the radio may be muted using the UNDOKapp (see Undok flyer).• Press on the remote control again to restore the volumeto the value it was at prior to the radio being muted.Alternatively, the volume may be restored using theUNDOK app (see Undok flyer).Entering passwords, search terms, and so on• Entry may proceed only using the UNDOK app(see Undok flyer).Switching on / off / standby• Press [POWER] to turn the radio on.Alternatively, the radio may be switched on using theUNDOK app.• Press and hold [POWER] for approximately 1 seconds toswitch off the radio (standby).• To completely switch off the device, disconnect it fromthe power supply.7. UNDOK – everything in the palm of your handThe UNDOK app, developed by Frontier Silicon, gives youfull control of radios and speakers from your smartphone.Whether you are setting up the device for the first time,specifying settings for the equaliser and multi-room, ormanaging your favourite stations – the UNDOK app letsyou access all the features from your smartphone or tablet,thereby offering you greater convenience.7.1 Interface / layout of the UNDOK home screen12345761 Update the audio system list2 Preview for ungrouped radios3 Set up new audio system4 Icon for managing an existing multi-room group5 Create a new multi-room group with this device6 Check for system update for all devices7 Further information, such as app info, changeapp theme, and data logging