DFBM-CM221 Overview
Pin No. 1 2 3 4 5 6 7 8 Data Sheet Name D2 GND ANT PIO11 MIC_P_R MIC_N_R MIC_P_L MIC_N_L Ground RF input/output Description Light if power on or pair Programmable input/output Microphone input positive (right side) Microphone input negative (right side).