Ar820 formaldehyde gas detector introduction, ar820 household formaldehyde gas detector, which adopts imported advanced sensors, are of excellent performance, high accuracy and stability, and are able to implement continuous real-time detection. This type of detectors can be applied in household, offices and any other dwellings., , ar820 formaldehyde gas detector product specifications, * measurement range: 0~5.0 ppm, * resolution: 0.01 ppm, * accuracy: ±5%, * temp. Measuring range: 0'c~40'c/32'f~104'f, * temp. Resolution: 0.1'c/0.1'f, * temp. Accuracy: 2'c, * humidity measuring range: 10~95%rh, * humidity resolution: 0.1%rh, * humidity accuracy: 5%rh,