PTM401 is a push-to-talk ring that sits between the microphone body and capsule, enabling PTT control directly within the mic assembly. It features a MUTE switch (ON/OFF) and a dedicated PTT button for rapid activation and muting during live operation. The accessory is designed for use with Wisycom MTH400 and MTH410 systems; the product page does not provide dimensions, material data, or packaging details.