4-i-1-indendørs luftkvalitetsovervågning Formaldehyddetektor med berøringsskærm FNIRSI SFD-02One small monitor a huge difference for your health The FNIRSI SFD 02 is an advanced 4 in 1 indoor air quality monitor that measures formaldehyde (HCHO), TVOC, humidity, and air quality index (AQI) in real time. It combines high precision electrochemical and semiconductor sensors, active ventilation, a clear 2. 4" HD touchscreen, smart alarms, and analytical functions. It is a complete tool for protecting your health at home, in the office, in the