With the Palmer DMS (Dynamic Mic Switcher) you can switch a dynamic microphone between two inputs.
The Palmer DMS Switcher is a passive unit and is exclusively for dynamic microphones. The switch on the DMS is momentary.
The range of applications is vast:
Switch your vocal mic between the FOH mixer and the monitor mixer - this will allow you to talk exclusively to the band or the monitor mixing engineer.
Sound variation. Send the two outputs of the DMS to two channels of the FOH mixer, adjust the channels differently (for example, adjust the EQ to get a telephone effect). This will allow you to switch between two microphone sounds on stage at your own leisure.
You can use the DMS to switch the microphone between two different rooms/zones