Size 312 Battery (Itc Style Shown) - Philips HearLink Series User Manual

Size 312 battery
(ITC style shown)
What it is and does
Program Button
(optional)
Mute, change
volume and
program
Battery drawer
Contains the
battery and
functions as
on/off switch
Vent
Microphone inlet
Sound in
Vent
Volume
Control
(optional)
Change
volume
Sound outlet
Sound out
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