Table 1.
Digital metal oxide (MOX) gas sensors main characteristics. TVOC: total VOC.
| Sensor | BME680 | SGP30 | CCS811 | iAQ-Core |
|---|---|---|---|---|
| Manufacturer | Bosch | Sensirion | AMS | AMS |
| Supply Voltage [V] | 1.71 to 3.6 | 1.62 to 1.98 | 1.8 to 3.6 | 3.3 |
| eCO2 range [ppm] | see note 1 | 400 to 60,000 | 400 to 29,206 | 450 to 2000 |
| TVOC range [ppb] | see note 1 | 0 to 60,000 | 0 to 32,768 | 125 to 600 |
| I2C Interface [kHz] | up to 3400 | up to 400 | up to 400 | up to 100 |
| SPI Interface [MHz] | up to 10 | No | No | No |
| Size [mm] | 3.0 × 3.0 × 0.93 | 2.45 × 2.45 × 0.9 | 2.7 × 4.0 × 1.1 | 15.24 × 17.78 × 4.3 |
1 BME680 provides a unique gas reading, which corresponds to sensor resistance in ohms.