Added Knowles_SPH0645LM4H.
I made this 3D model model using: https://www.knowles.com/docs/default-source/default-document-library/sph0645lm4h-1-datasheet.pdf
I made this 3D model model using: https://www.knowles.com/docs/default-source/default-document-library/sph0645lm4h-1-datasheet.pdf