Audiovox GMRS122-2 Owner's Manual page 10

Up Channel/Volume Button (10)
In the standby mode, pressing this button will increment the listening
volume. When in function edit mode this button will be used to adjust the
unit's settings.
Down Channel/Volume Button (11)
In the standby mode, pressing this button will decrement the listening
volume. When in function edit mode this button will be used to adjust the
unit's settings.
MODE Button (12)
This button is used to select various feature settings in the GMRS and FRS
modes.
External Speaker (SPK)/ Microphone (MIC)/CHG Jack (6)
This jack accepts both the optional Audiovox headset/microphone connector
and the supplied wall charging adapter. For additional optional equipment
and accessories for the GMRS122-2, visit the Audiovox web site at
www.audiovox.com.
Scan Button (13)
With the unit in standby mode, press the Power On/Off Button momentarily
to enable or disable the scan function; SCAN will appear on the display.
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