Research Article
Development of an IoT-Based Indoor Air Quality Monitoring Platform
Table 3
Specifications of the VOC sensor.
| Specification | Value |
| Sensor input voltage | 1 to 12 V | Operating temperature | -10 to 50 Celsius | Operating humidity | 5 to 95% RH (noncondensing) | Reaction time | Less than 10 sec | Recovery time | Less than 30 sec | Power consumption | Below 460 mW | Sensitivity (β) for toluene | (concentration: 1.0 ppm) | Sensitivity (β) for H2 | (concentration: 100 ppm) | Sensitivity (β) for i-butane | (concentration: 100 ppm) | Accuracy | ±7% |
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= resistance after gas injection/resistance in a clean state. |