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The thermometer is specially designed for monitoring the ventilation quality of interiors. We all know how the importance of the indoor climate in the workplace, in schools, kindergartens etc. The performance of an individual depends on the air quality at the workplace. 


The air quality monitor HFX 100 continuously checks the formaldehyde content in the room air. This reading will be displayed in large characters on the LCD. Furthermore, temperature and humidity are measured and visualized. To alert you of an excessive HCHO content, the air quality meter has a switchable LCD illumination. This changes from white to red when a critical amount has been exceeded. Then, for example, it is recommended to open a window to restore good air quality. The air quality meter is powered by a rechargeable battery and can be charged via the micro USB socket.




- Measurement of formaldehyde

- Large LCD display

- Alarm function

- Battery and mains operation

- Display of temperature and humidity

- Ideal for continuous monitoring 

Thermometer HFX 100

  • Measuring Function Formaldehyde HCHO
    Measuring range 0 ... 2 mg/m³
    Resolution 0.01 mg/m³
    Accuracy <0.6 mg/m³: ±0.06 mg/m³
      >0.6 mg/m³: ± 10%
    Measuring Function Temperature
    Measuring range -10 ... 50°C / 14 ...122°F
    Resolution 0.1°C / 0.18°F
    Accuracy ± 1°C / 1.8°F
    Measuring Function Humidity
    Measuring range 0 ... 99% r.H.
    Resolution 1% r.H.
    Accuracy 30 ... 80% r.H.: ± 5% r.H.
      Restl Ber.: ± 8% r.H.
    Display LCD with lighting
    Display of low battery voltage       Per symbol in the display
    Power supply 3.7V Li-Ion battery
    Operating conditions 0 ... 50°C / 32 ... 122°F / max. 85% r.H.
    Storage conditions -20 ... 60°C / -4 ... 140°F / max. 95% r.H.
    Weight 195 g / < 1 lb
    Dimensions 75 x 55 x 130 mm / 2.9 x 2.1 x 5.1 in 
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