8■Top1 Microphone mute button ( )Press to temporarily turn off (mute) the microphone. Tocancel the mute function, press it again.2 Microphone status indicatorLights up green when the microphone is active. Lightsup red when the microphone is set to mute.When the microphone is active, this indicator lights upbrightly if sounds are input.■Side1 Input terminal (IN)Connects the optional microphone (YVC-MIC1000EX)using the microphone cable.2 Output terminal (OUT)Connects the Control Unit using the microphone cable.■Bottom1 Name plateProvides the following information.Model No.: Model number of the productSERIAL LABEL: Serial number of the productMicrophone (YVC-MIC1000)1 21 21