The Rolls MS111 is a general purpose muting switch for microphones and will pass phantom power. It is configurable to be Push to Mute, Release to Mute, Push ON and Push OFF maintained contact. It is the only switch of this kind and is the result of many requests for variations of the popular MM11 that is push to mute only. The MS111 is configured by a switch accessed on the side that will reverse the action in momentary mode and by moving a wire on the main switch to the side for momentary.