The box AK 10 User Manual page 25

17 [SET]
Press the button once briefly, then use [UP] or [DOWN] to adjust the volume of the receiver.
Press the button twice briefly, then use [UP] or [DOWN] to enable or disable the noise reduction.
18 [DOWN]
Button to select the transmission frequency for radio operation with the microphones and the portable microphone
transmitter.
Press and hold the button for three seconds to perform an automatic frequency scan. This transfers the value via an
IR signal to the portable microphone transmitter. Hold the portable microphone transmitter with its underside close
to the display.
AK 10
Connections and controls
25