M5Stack TVOC/eCO2 Gas Sensor Unit SGP30

The M5Stack TVOC/eCO2 Unit is a digital gas sensor with the Sensirion SGP30. It measures volatile organic compounds (VOC) and hydrogen (H2) in the air and derives TVOC and an eCO2 value from them to assess indoor air quality. Typical accuracy is 15 % of the measuring range, the values are calibrated internally. For accurate values, adjust the sensor against a known reference.

Note: eCO2 is calculated from the H2 concentration and does not replace a real CO2 sensor.

Recommended Accessories:

• M5Stack Basic Core ESP32 IoT Development Kit V2.7
• M5Stack ATOM Lite ESP32 Development Kit

Features:

• Measures TVOC and eCO2, plus ethanol and H2 as raw signals
• I2C via Port A (Grove HY2.0-4P)
• Long-term stability through internal calibration
• On-chip humidity compensation, which needs an external humidity sensor
• 2 mounting holes for plug-in pins or screws

Application Examples:

• Air quality indicator for office and classroom
• Ventilation control based on air quality
• Recording air quality in the smart home

Documentation:

• M5Stack documentation TVOC/eCO2
• Arduino tutorial (M5Stack)

Technical Data:

• Manufacturer: M5Stack
• Manufacturer SKU: U088
• Sensor: SGP30, Sensirion
• I2C address: 0x58
• Interface: Grove Port A, GND, 5 V, SDA, SCL
• On the M5Stack Core: G21 SDA, G22 SCL
• Measuring range ethanol: 0 ppm to 1000 ppm
• Measuring range H2: 0 ppm to 1000 ppm
• Measuring range TVOC: 0 ppb to 60000 ppb
• Measuring range eCO2: 400 ppm to 60000 ppm
• Sampling rate: 1 Hz
• Resolution TVOC: 1, 6, 32 ppb
• Resolution eCO2: 1, 3, 9, 31 ppm
• Mounting: 2 holes for plug-in pins or screws
• Dimensions: 24 × 24 × 13 mm
• Weight: 8 g

Scope of Delivery:

• 1× M5Stack TVOC/eCO2 Gas Sensor Unit SGP30
• 1× Grove cable 20 cm
• 1× Storage box