Relacart M-D22 dynamic microphone module. The M-D22 is applicable to the Relacart UR series handheld wireless transmitter. It has excellent off-axis finger sound, high sound pressure tolerance and suitable frequency response curve to accurately restore various sounds. It can meet your needs no matter in speech or singing, and give you a true voice. M-D22 dynamic microphone module is compatible with Shure wireless microphone body.