FNIRSI SFD-02 4-in-1 Indoor Air Quality Monitor with Touch Screen

The FNIRSI SFD-02 is a 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 with active ventilation for accurate readings. The 2.4" HD touchscreen displays all parameters clearly, and smart audible alarms alert you when levels become unsafe.

• 4-in-1 monitoring: HCHO, TVOC, humidity, and AQI at a glance
• High-precision sensors: Electrochemical for HCHO, semiconductor for TVOC
• Active air suction: Ensures stable, accurate measurements
• 2.4" HD touchscreen: Intuitive interface with clear data display
• Smart alarms: Audible alerts when pollution exceeds safe thresholds
• Historical data: Curve graphs to track trends over time
• Family-friendly: Adjustable thresholds for children, pregnant women, and elderly

Ideal for home, office, car, or recently renovated spaces, the FNIRSI SFD-02 helps you maintain a healthy indoor environment. Powered by a built-in battery for portable use.