User's Manual

Shure Incorporated
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Boundary and Gooseneck Base Transmitters
① Power Button
Press to power on; press and hold to power off.
② Mute/Active Button
Four settings are available for the mute/active button:
Toggle: Press to switch between active and mute states
Push-to-Mute: Hold button to mute microphone
Push-to-Talk: Hold button to activate microphone
Disabled: Button functionality off
③ Mute LED
Indicates whether microphone is active or muted. The following settings are available:
Active Muted
Green* Red*
Red Off
Red Flashing red
*MX400R series gooseneck microphones (red LED) do not offer this setting.