TSI Indoor Air Quality Tester from the United StatesInstrument Introduction:
The "five in one" indoor air quality testing instrument is lightweight, easy to use, accurate, and reliable.

TSI Indoor Air Quality Tester from the United StatesTechnical parameters:
carbon dioxide
Sensor type: Dual wavelength NDIR
Range 0-5000ppm
Error reading of ± 3.0% or ± 50ppm, take the larger value
Accuracy 1ppm

temperature
Sensor type thermistor
Range 0-60 ℃
Error ± 0.6 ℃
Accuracy 0.1 ℃

relative humidity
Sensor type: Thin film capacitor
Range 5-95% RH
Error ± 3% RH
Accuracy 0.1% RH

CO
Sensor type: Electrochemical
Range 0-500ppm
Accuracy reading of ± 3.0% or ± 3ppm, whichever is greater
Resolution of 0.1ppm

wind speed
Range 0-20 m/s
Accuracy ± 5% reading or ± 0.025 m/s, whichever is greater

Main features:
TSI's Q-Trak TM indoor air quality monitor has a multifunctional sensing probe that measures multiple key parameters (CO2, CO, temperature, relative humidity) simultaneously. When paired with a wind speed probe, the Q-Trak TM becomes a "five in one" instrument. In addition, Q-Trak TM also provides dew point, wet bulb temperature, and outdoor air percentage for ventilation calculations.
Q-Trak TM has a beautiful design, is lightweight and sturdy, and is easy to carry. It can display readings in real time, as well as monitor and store data for a long time. Advanced data storage mode, which can set parameters such as start/stop time and sampling interval. If data is stored every minute, Q-Trak TM can continuously store data for a whole month. In addition, for the convenience of unattended long-term monitoring, Q-Trak TM can also use AC power supply.