Accuracy can vary based on environment and testing methods. Internal test accuracy ranges are:
CO2: ±15%. Low-cost sensors may struggle with uniform CO2 distribution Temperature: ±8℃ (device must be on and placed in a windless environment for 30 min) Humidity: ±8% (device must be on and placed in a windless environment for 30 min) PM2.5: ±10μg/m³ (readings < 100μg/m³); ±10% (readings > 100μg/m³). The PM2.5 sensor can be affected by ultrasonic humidifiers