> For the complete documentation index, see [llms.txt](https://learn.arduinosa.co.za/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.arduinosa.co.za/sensor-kits/37-in-1-sensor-kit/small-sound.md).

# Small Sound

![](/files/-MS2LvSZra3JMzTzQ3p7)

A microphone module with a small electret capsule. Output ‘DO’ (active high) is switched when the sound level exceeds a preset level. A pot allows adjustment of the level. The analog output signal is available at the ‘AO’ pin. Except for the smaller size of the capsule and its lower sensitivity the module is identical to the ‘Big Sound’ module.