Phonak FreeCom 7100 User Manual page 11

C Control Box
C3 Battery end-of-life
u When battery power runs low, the system signals this with a beep every 30 secs. Shortly
before powering down, the frequency of the beeps is increased.
u If the battery is dead, or if the battery is not present, or if the system is off (position "0"),
the FreeCom 7100 behaves as a headset with passive hearing protection and intercom
works without volume control.
C4 To control the Intercom volume
u By default, the + - buttons (Fig14) allow to change the Intercom audio volume.
u Intercom levels can be adjusted 2 levels up and 7 levels down from the default position.
u 3 beeps signal indicates when the maximum or minimum level is reached.
Fig 14
+ - buttons
Intercom Volume Scale
+6 dB (max)
+3 dB
0 dB (default)
-3 dB
-6 dB
-9 dB
-12 dB
-15 dB
-18 dB
-21 dB (min)
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