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Qwiic Air Quality Sensor - module with SGP40 air quality sensor

Air quality sensor module based on the SGP40 system. The board is equipped with Qwiic connectors. SparkFun SEN-18345

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ID: 586702

19,47€ gross (23% VAT)
15,83€ net

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Air quality sensor module based on the SGP40 system. The sensor is based on CMOSens® technology by Sensirion and uses a metal oxide (MOx) sensor. Provides indoor air quality information based on volatile organic compounds (VOC) with humidity compensation. Both the sensing element and the VOC algorithm are highly resistant to contaminating gases present in real-world applications, allowing long-term stability as well as low drift. SGP40 does not return specified concentrations or VOC gases. Instead, it generates a digital value based on typical VOC gases present in the indoor environment and this value can be combined with Sensirion's VOC index algorithm to detect the relative intensity of VOC events in relation to the average readings over a 24 hour period. SGP40 communicates via the I2C interface available on the Qwiic connector. Full documentation with examples of use is available in the guide.


  • Uses I2C interface (Qwiic-enabled)
    • I2C Address: 0x59
    • 2x Qwiic connectors
  • Operating voltage range:
    • 1.7V - 3.6V (Typ. 3.3V)
    • The Qwiic interface provides 3.3V
  • Typical current consumption:
    • 2.6mA during continuous operation (at 3.3V)
    • 34µA when idle (heater off)
  • Output signal:
    • Digital raw value (SRAW): 0 - 65535 ticks
    • Digital processed value (VOC Index): 0 - 500 VOC Index points
  • Switch-on behavior:
    • Time until reliably detecting VOC events: <60s
    • Time until specifications are met: <1h
  • Recommended sampling interval:
    • VOC Index: 1s
    • SRAW: 0.5s - 10s (Typ. 1s)