The Adafruit SGP30 is a multi-pixel MOX (metal-oxide) gas sensor from Sensirion that measures Total Volatile Organic Compounds (TVOC) and equivalent CO2 (eCO2) for indoor air quality monitoring. With fully calibrated output signals and I2C interfacing, it provides a straightforward way to detect changes in air quality.

The sensor combines multiple metal-oxide sensing elements on a single chip along with a built-in microcontroller that handles power management, analog reading, baseline calibration, and TVOC/eCO2 calculation. Unlike the CCS811, this sensor does not require I2C clock stretching.

Key Features

• TVOC Measurement – 0 to 60,000 ppb (parts per billion)
• eCO2 Measurement – 0 to 60,000 ppm (equivalent CO2 calculated from H2 concentration)
• Calibrated Output – Typical accuracy of 15% within measured values
• Built-in Baseline Calibration – Automatic calibration tracking with ability to save/restore baselines
• Humidity Compensation – Accept external humidity data over I2C for improved accuracy
• I2C Interface – No clock stretching required
• 3.3 V / 5 V Compatible – Onboard 1.8 V regulator and level shifting

Also Consider

• SCD-40 True CO2 Sensor – Photoacoustic sensor that directly measures CO2 (400–2,000 ppm)
• SCD-30 NDIR CO2 Sensor – True CO2 sensor with 400–10,000 ppm range

Ideal For

• Indoor air quality monitoring and trend detection
• Smart ventilation and HVAC triggering
• Environmental sensing projects
• Air quality comparison and relative measurement

Package Contents

• 1× Adafruit SGP30 Air Quality Sensor Breakout