Gravity: SGP40 Air Quality Sensor

DFRobotSKU: SEN0394
Sale price £13.30
incl. VAT
excl. VAT
Only 9 units left

Awesome Extras

DFRobotGravity: Arduino Zero to Hero Kit
Sale price £89.40 incl. VAT excl. VAT
DFRobotGravity: Starter Kit for Arduino
Sale price £67.10 incl. VAT excl. VAT

The SGP40 Air Quality sensor adopts the new SGP40 digital VOC sensor chip launched by the well-known Sensirion. Based on the Sensirion’s 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 Sensirion’s powerful VOC algorithm, the sensor signal can be directly used to evaluate indoor air quality. It features low power(2.6mA), fast response(2s) and small size. The data from the sensor can be directly used to evaluate air quality without calibration.

Integrated with an easy-to-connect Gravity interface, this Gravity SGP40 Air Quality sensor is very suitable for indoor projects that will be used for a long time, such as refitting air purifiers, kitchen hoods, etc. Besides, we provide you with C and Python libraries for use with different main controllers.

Note: VOC index is obtained by converting the detected ethanol equivalent in air.


  • Ultra-low power consumption(2.6mA)
  • Built-in temperature and humidity compensation, no need to calibrate
  • VOC index for direct air quality indication


    • Power Supply: 3.3V~5V
    • Operating Current: 2.6mA
    • Preheat Time: 10S
    • Response Time: 2S
    • Communication: I2C
    • I2C Address: 0x59
    • Operating Temperature Range: -10°C - 50°C
    • Storage Temperature Range: 5°C - 30°C
    • Operating Humidity Range: 0%RH - 90%RH
    • VOC Index: 0-500
    • Measuring Range: 0-1000ppm (Ethanol Equivalent)
    • Dimension: 20 x 22mm


    Package Contents

    • 1x Gravity: SGP40 Air Quality Sensor
    • 1x Gravity-4P I2C/UART Sensor Cable

    Payment & Accreditations

    Payment methods
    Visa Mastercard Maestro PayPal Amazon Klarna

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.