Headphone Socket - perfect pro SOLOWORKER FM Bedienungsanleitung

Headphone socket

The 3.5 mm stereo headphone socket located on the top of
your radio is provided for use with stereo headphones or an
earpiece. Connecting headphones automatically mutes the
built in speaker.
Important:
Excessive volume levels from earphones and headphones
may cause damage to your hearing.
Note:
1) Volume protection is featured in this unit to prevent unexpectedly
loud output while using headphones/an earpiece. If you
plug in a headphones/an earpiece when your speaker
volume is turned on to more than 4, the volume step will
be decreased to  as soon as you insert a headphones/
an earpiece to the headphone socket.
2) Never use the headphone socket in rainy or moist conditions
to prevent moist from entering the radio. Always keep the
rubber cover on top well closed under these conditions.
Key lock
The key lock function is used to prevent unintentional
operation of the radio. When key lock is activated, all
function keys will be disabled.
To activate the key lock function, press and hold the Select
button for 3 seconds. "Keys Locked" will show on the display. To
disabled the key lock function, press and hold the Select button
for 3 seconds and "Keys Unlocked" will show on the display.
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