The Rolls MS111 is a general purpose muting switch for microphones. The MS111 will pass phantom power, with no popping on the outputs. It is configurable to be Push to Mute or release to Mute by a second switch accessed on the side of the unit.
The MS111 can have the mute switch configured to be Momentary (see manual), the switch is set to latching from the factory. The MS111 is only compatible with balanced signals.
To switch a microphone signal on or off connect the balanced XLR cable coming from your microphone to the female Input jack on the MS111 and connect the male Output jack with a balanced XLR cable to the input of your mixer, or the next device in the signal path. Press the switch on the MS111 once to activate the microphone, press the switch again to mute the microphone.