This tiny MEMS microphone has an amplifier gain of 66. When there is no sound detected, it outputs voltage around 0.66*VCC. When speaking, you can easily get the acoustic waveform by ADC sampling. The module can be used on all kinds of 3.3V/5V main-controllers. Connection Example - DFRduino UNO Specifications * Signal Type: Analog signal * Power Supply: 3.3V/5V * Directivity: All-round * Sensitivity: -42dB * S/N Ratio: 59dBA * Frequency Range: 100Hz~8KHz * Dimension: 18 x 12.5 mm Resources * Product Wiki Package Contents * 1x Fermion: MEMS Microphone Module * 1x 2.54-3P Black Single Row Pin Header https://elecena.pl/product/22724650/fermion-mems-microphone-module 2023-03-07 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2023-12-27 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2024-09-19 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2024-11-29 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2024-11-30 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2025-02-13 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2025-04-10 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2025-11-28 https://elecena.pl/product/22724650/fermion-mems-microphone-module 2025-11-29