Air Quality Sensor: VOC & eCO2 - CCS811

Air Quality Sensor for recording the (TVOC) Total Volatile Organic Compound reading and (eCO2) equivalent carbon dioxide reading indoors.

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Last Updated: 08/16/2022





  • Air Quality Sensor for measuring the TVOC and eVOC values indoors
  • TVOC reading (Total Volatile Organic Compound)
  • eCO2 reading (equivalent carbon dioxide)
  • Chipset: CCS811
  • eCO2 concentration range: 400 to 8192ppm
  • TVOC concentration range: 0 to 1187ppb
  • Useful for detecting Amines, Alcohols, Organic Acids, Aldehydes, Ketones, Aliphatic and Aromatic Hydrocarbons
  • Serial Communication Protocol: I2C
  • ADC onboard so no conversion is needed
  • Low power consumption for battery powered projects
  • Operating Voltage: 1.8V to 3.6V
  • Current Consumption:
    • When measuring: 26mA
    • Average when measuring every 60 seconds: 0.7mA
    • Sleep Mode: 19uA
  • I2C Frequency Supported: 10 to 400khz
  • Pinout:
    • VCC: 1.8V to 3.6V Power
    • GND: Ground (0V)
    • SCL: I2C Clock Pin (to microcontroller)
    • SDA: I2C Data Pin (to microcontroller)
    • WAKE: active low input that should be held low during I2C transmission
    • INT: optional active low output that is pulled low at the end of a reading and when a threshold is met
    • RST: optional active low input for Reset
    • ADDR: address set pin (when low the I2C address is 0x5A; when high the I2C address is 0x5B)
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