Gain Express Wall Mount vs YVELINES Air Quality Tester

  • Great for measuring CO2 levels
  • Easy to use
  • Automatic calibration
  • Display is easy to read in the dark
  • Triple display of CO2/RH/Temp is a bit larger than some
  • Great for measuring various common indoor air pollutants
  • Easy to use
  • Measures approximately 3"x6"x1"
  • Plastic hinged support on the back so that it can be self-standing
  • Good for measuring air quality in Los Angeles

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