Sennheiser evolution wireless G4 300 Series - Muting the Audio Output

Using the EM 300-500 G4
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Switching the EM 300-500 G4 on and off
To switch the receiver on:
▷ Short-press the STANDBY button.
The receiver switches on and the Receiver Parameters standard dis-
play appears.
►
To switch the receiver to standby mode:
▷ If necessary, deactivate the lock-off function (see “Lock-off function”).
▷ Press and hold the STANDBY button until OFF appears on the display
panel.
The display panel switches off.
To completely switch the receiver off:
▷ Disconnect the receiver from the power supply system by unplugging
the power supply unit from the wall socket.