Sennheiser evolution wireless G4 em 300-500 Instruction Manual page 26

To open the Squelch menu item:
On the home screen, press the jog dial to open the operating menu.
▷
▷ Turn the jog dial until the Squelch menu item appears in the selection
frame.
▷ Press the jog dial to open the menu.
Adjust the settings as desired.
▷
►
▷ Press the jog dial to save your selection.
or
▷ Press the ESC button to cancel the entry without saving the setting.
Using the EM 300-500 G4
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