M5Stack U088 Digital Multi-Pixel Gas Sensor Unit is a TVOC/eCO2 mini sensor unit with integrated SGP30. This sensor unit offers a 15% of measurement accuracy. The U088 digital multi-pixel gas sensor measures various Volatile Organic Compounds (VOC) and H2 in the air. This sensor can also be programmed to detect Total Volatile Organic Compounds (TVOC) and Equivalent Carbon-dioxide (eCO2) reading concentration measurement. Features include outstanding long-term stability, humidity compensation, 2x LEGO™ hole, and HY2.0 4P interface. The digital gas sensor unit is suitable for applications in air quality monitoring and eCO2 concentration.