STMicroelectronics STEVAL-MIC006V1 Microphone Coupon Board is a compact Daughterboard equipped with four MP23DB01HP Digital MEMS Microphones. The STEVAL-MIC006V1 Coupon Board is designed to be used with the X-NUCLEO-CCA02M2 Expansion Board. The Coupon Board design allows easy performance testing of the MP23DB01HP MEMS Microphones. It is possible to detach the single PCBs hosting each microphone.