RCM Audio Sensor 2 Manual page 3

The GAIN (i.1 pos.3 and 10) switches enable the user to adjust the output of the preamplifier
to match the other sources in the system. Start with all the switches in the OFF position and
successively switch each one in and out until you reach the desired level to match other
sources.
0,3 mV
1,4 mV
0,4 mV
2,5 mV
3
0,6 mV
5,0 mV
0,9 mV