The Sound sensor module is a simple microphone. Based on the power amplifier LM386 and the electret microphone, it can be used to detect whether there is any sound that beyond the threshold. The threshold can be adjusted by the on-board potentiometer. https://elecena.pl/product/6057376/sound-sensor 2016-05-07 https://elecena.pl/product/6057376/sound-sensor 2025-12-18