Open Access
Table 1
Sensor performance.
| Sensor type | Factor | Measurement range | Precision |
|---|---|---|---|
| HTS221 | Humidity | 0 to 100(% RH) | ± 3.5, (20 to +80)(% RH) |
| Temperature | −40 to 120(°C) | ± 0.5, (15 to +40) (°C) | |
| LPS22HBTR | Pressure | 260 to 1260 (hPa) | ± 0.1 (hPa) |
| APDS-9960 | Light | 0-65535(Lux) | ± 15% |
| MQ-2 | Smoke | 100–10,000 ppm | See Figure 2a |
| MQ-7 | CO | 10–2000 ppm | See Figure 2b |
| MQ-135 | CO2 | 10–1000 ppm | See Figure 2c |
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