The GMA2718H09-F42-4P MEMS Microphone with SMD-4P,1.9x2.8mm and RoHS manufactured by INGHAi is an ultra-miniature surface-mount microphone designed to allow voice and other sound reproduction on a variety of devices and applications. It is designed for integration into board-level solutions for speech recognition, noise cancellation, sound recognition, and other applications. Features include high-sensitivity, low noise, wide frequency range, and a variety of features to make it compatible with a variety of audio equipment. The device is compliant with the European Directive 2002/95/EC on Restriction of Hazardous Substances (RoHS).