Optimus MI Series Installation And Operating Instructions Manual page 43

 GAIN: Microphone input sensitivity
GAIN: +15 dB
GAIN: +12 dB
GAIN: +9 dB
GAIN: +6 dB
GAIN: +3 dB
Normal
GAIN: 0 dB
Sensitivity
GAIN: -3 dB
GAIN: -6 dB
GAIN: -9 dB
GAIN: -12 dB
GAIN: -15 dB
 ATOF: Automatic microphone off countdown under mute status
AO OF
This function is deactivated.
AO 1 1 minute countdown to turn off.
AO 10 10 minute countdown to turn off.
AO 30 30 minute countdown to turn off.
(Default 10 minutes)
 RC: Remoset Configuration
Only frequency and group setting
rC-FrE
will be synchronized.
All data setting will be
rC-ALL
synchronized.
(Default rC-FrE)
VOLUME ADJUSTMENT
In non-setting mode, adjust the volume from 0 to -31 dB using the ▲/▼ buttons.

The minimum volume is -31 dB.

The maximum volume is 0 dB.

The default volume setting is -10 dB.
MI SERIES Version 1.2
MI Series
It shows the microphone input sensitivity
is now at 0 dB (default setting).
This function is deactivated.
Only frequency and group setting will be
synchronized.
Wireless system
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