FNIRSI SFD-02

One of the key advantages of this model is its accurate real-time monitoring of formaldehyde (HCHO) and TVOC, color touchscreen, and intelligent indoor air quality analysis. The FNIRSI SFD-02 is a 4-in-1 indoor air quality monitor designed to measure formaldehyde (HCHO), total volatile organic compounds (TVOC), humidity, and overall air quality. The device records historical measurement data, calculates average HCHO and TVOC values, allows users to configure custom alarm thresholds, and evaluates indoor air quality using a five-level safety rating. It is an excellent choice for homes, offices, schools, hotels, and newly renovated buildings.

Functions

• Real-time formaldehyde (HCHO) monitoring
• Total Volatile Organic Compounds (TVOC) measurement
• Indoor humidity monitoring
• Real-time indoor air quality evaluation
• Five-level formaldehyde air quality classification
• Historical HCHO and TVOC data recording
• Average HCHO and TVOC value calculation
• User-configurable HCHO and TVOC alarm thresholds
• Audible and visual alarm notifications
• Smart formaldehyde removal time and cost calculator
• Date and time display
• 2.4" HD color touchscreen
• Adjustable display brightness
• Built-in rechargeable lithium battery
• USB Type-C charging
• Supports operation while charging

Technical Specifications

• Model: SFD-02
• Application: 4-in-1 indoor air quality monitor
• Display: 2.4" HD color touchscreen
• Screen material: Tempered glass
• Adjustable backlight brightness
• Formaldehyde (HCHO) measurement range: 0–2000 ppm
• Formaldehyde sensor: Electrochemical
• Formaldehyde warm-up time: Approx. 5 s
• TVOC measurement range: 0–10 mg/m³
• TVOC sensor: Semiconductor
• TVOC warm-up time: Approx. 120 s
• Formaldehyde air quality levels:
  • Excellent: 0–0.08 mg/m³
  • Good: 0.08–0.10 mg/m³
  • Mild: 0.10–0.20 mg/m³
  • Moderate: 0.20–0.30 mg/m³
  • Severe: Above 0.30 mg/m³
• Power supply: USB Type-C (5 V / 2 A)
• Battery: 1000 mAh rechargeable lithium
• Operating time: Approx. 8–10 hours
• Charging time: Approx. 1.5 hours
• Operating temperature: −5 °C to +40 °C
• Relative humidity: Up to 80%
• Dimensions: Approx. 75 × 45 × 95 mm
• Weight: Approx. 193 g :contentReference[oaicite:1]{index=1}

Package Contents

• FNIRSI SFD-02 Indoor Air Quality Monitor
• USB Type-C cable
• User manual
• Packaging