The keyestudio microphone sensor is typically used in detecting the loudness in ambient environment. The Arduino can collect its output signal by analog input interface.
The S pin is analog output, that is voltage signal real-time output of microphone. The sensor comes with a potentiometer, so that you can turn it to adjust the signal gain.
It also has a fixed hole so that you can mount the sensor on any other devices. You can use it to make some interactive works, such as a voice operated switch.
Specification
- Operating voltage: 3.3V-5V（DC）
- Operating current: <10mA
- Interface：3PIN
- Output signal: Analog
MOre information available at: KS0035 Microphone Sound Sensor with Potentiometer - Keyestudio Wiki
Arduino Compatible Microphone Sound Sensor Module
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Description does not match product - only analog
The product description says digital and analog output but there is only one output. The datasheet on this site is for a different product which has 4 pins, 2 of which are for digital and analog output. It seems the product is superceeded, but the datasheet and description are for the old product.