Phonak Campus SX User Manual page 12

The Campus SX picks up the teachers voice
through the MicroBoom or the MM8 microphone
and instantly relays it to the children wearing
Phonak FM receivers. Even in places where it is
difficult to understand with hearing instruments
alone and over distance, Campus SX will always
provide a loud and clear speech signal.
Since the teacher's voice is sent wirelessly to the
children, the distance between the teacher and the
children becomes less important. Children sitting
in the last row will understand as easily as children
sitting in the front row.
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