Gravity: SGP40 Air Quality Sensor Brand_M5Stack Sound is broken down into

Sound is broken down into seven frequency bands and the peak level for each band can be read

but you can have 3 colors total by turning on the red and green LEDs

To make things even more convenient

The antenna can be used outdoors

Gravity: SGP40 Air Quality Sensor Brand_M5Stack Sound is broken down intoThe SGP40 Air Quality sensor adopts the new SGP40 digital VOC sensor chip launched by the well known Sensirion. Based on the Sensirions CMOSens technology, the SGP40 offers a complete sensor system on a single chip, a temperature controlled micro hotplate and a humidity compensated indoor air quality signal. In combination with Sensirions powerful VOC algorithm, the sensor signal can be directly used to evaluate indoor air quality. It features low