HCH-22 Formaldehyde HCHO Air Monitor Temperature Humidity Meter Gas Detector

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Model: HCH-22

This portable gas detector is used to monitor Formaldehyde (HCHO) concentration and also measure the temperature and humidity of the environment. It also displays LCD icons indicating the surroundings are safe for human beings.

Formaldehyde (HCHO) is one of the most common poisonous substances found in daily life and industry. Thus having this instrument will help you achieve a safer place for you and your loved ones.

Widely used in furniture, floorboards, wallpapers, paint, gardening, indoor decorations, construction, dyestuffs, paper manufacture, pharmaceutical, medical, food, cleaning, synthetic resins, textile treatment, horticulture, and cosmetics.


  • Used the latest technologies to ensure the accuracy
  • Selectable measurement unit (mg/ppm)
  • Large display for easy reading
  • With backlight function
  • Can be hung on a wall
  • Low battery indicator
  • Sleep mode function
  • Selectable temperature unit (°C/°F)
  • Environment Safety indicator
  • Zero drift for formaldehyde reading


  • Parameter: HCHO (CH2O), Temperature, Humidity %RH
  • Formaldehyde Measurement:
    • Range: 0~5mg/mᵌ
    • Resolution: 0.01mg/mᵌ
    • Accuracy: ±5.0% + 0.03mg/mᵌ
      • At 25°C, 30~70%RH: ±10.0% +0.03mg/mᵌ
  • Temperature Measurement:
    • Range: -10~60°C (14~140°F)
    • Accuracy: ±0.5°C
  • Humidity Measurement:
    • Range: 0~99.9% RH
    • Accuracy: ±3.0%
  • Temperature Unit: °C / °F
  • Measurement Unit: (mg / ppm)
  • Battery: 3 x 1.5V (LR6) (not included in the set)
  • Dimension: 125 x 64 x 32mm
  • Weight: approx. 177gms

Set Includes:

  • 1x Formaldehyde Monitor (main unit)
  • English User Manual
  • Standard Factory Package

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