Store

This product is no longer available

We no longer stock Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2 - STEMMA QT / Qwiic, but here are current alternatives in Gas & Air Quality Sensors.

Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2 - STEMMA QT / Qwiic

Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2 - STEMMA QT / Qwiic

Discontinued

The Adafruit CCS811 is an indoor air quality sensor breakout that measures Volatile Organic Compounds (VOCs) and provides equivalent CO2 (eCO2) readings over I2C. The onboard MOX sensor and microcontroller handle gas detection and signal processing, returning ready-to-use TVOC and eCO2 values.

The sensor measures eCO2 concentration from 400 to 8,192 ppm and TVOC from 0 to 1,187 ppb. It can detect alcohols, aldehydes, ketones, organic acids, amines, and aliphatic and aromatic hydrocarbons. Multiple drive modes allow measurements every 1 second, 10 seconds, 60 seconds, or 250 milliseconds. STEMMA QT / Qwiic connectors enable solderless I2C connections.

Key Features

  • eCO2 Measurement – 400–8,192 ppm equivalent CO2
  • TVOC Measurement – 0–1,187 ppb total volatile organic compounds
  • I2C Interface – With STEMMA QT / Qwiic connectors for plug-and-play wiring
  • Configurable Interrupt – Fires on conversion ready or when readings cross a threshold
  • Multiple Drive Modes – 1 s, 10 s, 60 s, or 250 ms measurement intervals
  • Onboard Microcontroller – Handles sensor control and analogue-to-digital conversion
Note: Like all VOC/gas sensors, the CCS811 has variability and should be calibrated against known sources for precise measurements. Run the sensor for 48 hours on first use to "burn it in", then allow 20 minutes of warm-up each time it is powered on.
Warning: The CCS811 uses I2C clock stretching, which is not supported by some platforms including Raspberry Pi.

Ideal For

  • Indoor air quality monitoring
  • HVAC and ventilation control
  • IoT environmental sensing projects
  • Smart home air quality alerts

Package Contents

  • 1× Adafruit CCS811 Air Quality Sensor Breakout with STEMMA QT
Maddy, co-founder of Little Bird

Need help? We're here for you!

Hi, I'm Maddy. My team and I are ready to help with your order or any questions.