Sennheiser MMD 835-1 - Dynamic Cardioid Microphone Module for G3 or 2000 Series SKM Transmitters - Black The MMD 835-1 capsule is easily installed, includes a metal grille and replaces faulty or damaged capsules on the Sennheiser SKM835, G3 or SKM 2000 series handheld wireless transmitters. Uniform on-axis and off-axis response Add the MMD 835-1 to the SKM2000 wireless handheld system for quality Sound. Can be installed in seconds without tools.