The STEVAL-MKI129V3 is a daughterboard designed to be used in conjunction with the STEVAL-MKI126Vx (Smart Voice) kit, containing 4 MP34DT01 digital MEMS microphones. The coupon concept allows easy performance test of ST MEMS microphones. When inserted in the Smart Voice board, it is possible to detach the single PCBs hosting each microphone.