PTM301 is a push-to-talk ring that sits between the microphone body and capsule to enable PTT control. This variant features a double-switch design with one switch for PTT and another for MUTE, allowing independent operation during live or broadcast use. The accessory is compatible with Wisycom MTH400 and MTH410 transmitter/microphone systems. No dimensions, weight, mounting thread, or electrical specifications are provided on the product page.