12
ITC/HS-model
FS-model
a
Custom made shell
b
Receiver (sound outlet) and wax protection system
c
Battery compartment with ON/OFF switch
d
Protected microphone inlet
e
Program switch (optional)
f
Right or left indicator (right=red, left=blue)
g
Volume control (optional)
h
Vent
3. Hearing system description
a
b
c
e
d
h
g
a
b
c
e
d
g
h
f
f
