This station combines an MQ-135 and DHT11 to show sensor trends alongside temperature and humidity. The module alone does not produce an official AQI or an accurate CO₂ concentration.
Conditioning and warm-up
Follow the initial sensor conditioning guidance, then allow heater stabilization on each power-up. Initial burn-in is not the same as the shorter warm-up during routine use.
Reading and interpretation
Log the raw output or Rs/R0 against an established baseline and include temperature and humidity for context. Do not map generic ADC thresholds to “good,” “moderate,” or “hazardous” air without a defined calibration and reference.
Project limits
Use the station to compare relative changes at one location. Regulatory or selective measurements require calibrated instruments and a sensor designed for the target gas.
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