DT900A, 2-in-1 Formaldehyde HCHO & TVOC Meter

The HCHO Tester provides a real time measurement of HCHO and TVOC tech product to meet with a variety of occasions air pollution measurement needs, timely responds air pollution. This instrument has a high accuracy, fast response, sensitivity. It is compact, easy to carry, suitable and home, offices, factories, hotels and schools and other indoor environments. It can be displayed at any Formaldahyde in the air and the concentration of TVOC, and calculate the value of API (Air Pollution Index).


Measures VOC (Volatile Organic Compound) and Formaldehyde concentrations in real-time. Fast response time, compact, easy-to-carry, and excellent for checking the indoor air quality of homes, offices, factories, hotels, schools and other indoor  environments. Potential sources for VOCs include paints, finishes, adhesives, cigarette smoke, pesticides, personal care products, car exhaust, new furnishings, wall coverings, household cleansers, and cooking fuels. Chemicals include: Acetone, Ethylene Glycol, Formaldehyde, Xylene, 1,3-butadiene, Tetrachloroethene, Hydrogen Sulfide, Ammonia, Toluene, Benzene, Methylene Chloride, Perchloroethylene, and MTBE.


  • Fuel Cell. HCHO sensor, high accuracy and reliability
  • LCD display with backlight
  • Real-time display the concentration of HCHO in the air
  • Real-time display the concentration of TVOC in the air
  • Real-time display the API
  • Sound and Light alarm when pollution
  • Auto power off


Please refer to the product’s datasheet here. (pdf)

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