Air quality monitor/For CO2, temperature and humidity (Non-dispersive infrared absorption- NDIR)


Digital Display: CO2  Technolgy  Non-dispersive infrared absorption (NDIR)

Features: CO2 concentration/temperature/ humidity detection

Detection range: 400-5000 PPM

Power Supply: Rechargeable Lithium Battery 1600 mAH

Support: Alarm sound more than 1000 PPM; alarm sound can be open/close

Product size: 90 mm X 80 mm X 40 mm

Weight: 113 gm

Material: ABS

Level: 400 PPM – 1000 PPM = GOOD ; 1001 PPM – 2000 PPM = NORMAL ; 2001 PPM- 5000 PPM = POOR




Temperature and relative humidity

The apparent temperature depends on several factors, such as air temperature, thermal radiation, relative humidity, wind speed, human activity and health status, clothing, etc. Among them, air quality monitor for co2  temperature and relative humidity are two important factors affecting human comfort. We generally feel comfortable at the temperature of 20 °C to 24 °C and a RH of 30% to 60% in winter and at the temperature of 23 °C to 26 °C and a RH of 25% to 60% in summer.

Power on/off 

Power on: Press and hold the top button of the device for 3 seconds to power it on; if the device is not powered on, please charge it.
Power off: Press and hold the top button of the device for 3 seconds to power it off.


The device has a built-in lithium battery, and please use the power cord provided along with the device for charging.


Features: air quality monitor for CO2, temperature, humidity detection CO2: it is commonly present as a compound in the atmosphere, accounting for about 0.04% (400 ppm) of the volume of the atmosphere, and usually produced in burning of organic compounds, the respiratory action of cells, the fermentation of microorganisms, etc. The carbon dioxide in indoor environment is mainly from human breathing.


  • The device is not waterproof and dust-proof.
  • Keep the air inlet and outlet unblocked when used to ensure an accurate result.
  • Do not use the device in hot work in order to avoid explosion.

Tolerance Of Accuracy

CO2 concentration:


Temperature: ±0.3
Humidity: ±2%RH
Power Supply USB/lithium battery
Response Time <120S
Value Update Time <3S
Battery Capacity 1600mAh
Dimensions Of Product 90X80X40(mm)
Net Weight 113g
Dimensions Of Display  

84 X 74(mm)


Display Mode

Digital display
Operating Temperature -10~+50


PV 502

Additional information

Weight .1 kg
Dimensions 9 × 8 × 4 cm


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