Logging air quality meter CP11

  • CO2, humidity and temperature logging
  • 18 000 data point memory
  • Psychrometric calculations
  • Max-min-average functions
  • Adjustable audible CO2 alarm
  • Mini USB interface


The CP11 handheld instrument is an economical multiple parameter measuring device that simultaneously measures and records CO2, humidity and temperature. It also calculates the dew point and wet bulb temperature. With the Rotronic SW21 software that comes with the device, the data can be downloaded, saved and analyzed.


Power supply
4 x AA batteries / optional AC adapter AC1214
Measuring range
0…5000 ppm, 0,1...99,95 %RH, -20...60 °C
Warm-up time
<1 min
76,7 x 41,8 x 233,9 mm