Sangean WR-2 (R1) - Manual (Page 24)

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Display backlight
To turn on display illumination, press and release Light button ( ).
By pressing and releasing Light button, you may also adjust display
brightness or turn off the illumination completely.
Nap timer
. Press the Nap timer button to enter the menu setting. Keep holding
the Nap timer button and the options will show on the display
from 5 to 20 minutes. Stop until the required Nap Timer setting
appears on the display. The setting will be saved and the LCD
will return to normal display. After 0 seconds, the display will
show the countdown of the nap time..
2.To cancel a sounding Nap timer, press Power button. If any button
other than the Power button is pressed when the alarm sounds,
snooze function will be activated. To cancel the function when
countdown is progressing, go to nap timer setting menu and
select ‘OFF’.
Software version
The software display cannot be altered and is just for your reference.
. Press Menu button to enter the menu setting.
2. Rotate the Tuning control knob until “VER XX” appears on the
display to view the software version of your radio.