Handheld Multimeter monitors indoor air quality.

Press Release Summary:

Equipped with ROTRONIC HYGROMER® IN-1 humidity sensor, Model CP11 simultaneously measures and records CO2, humidity, and temperature. Unit also calculates dew point and wet bulb temperature. In addition to 18,000 data point memory, instrument provides Max/Min/Avg value display, adjustable audible CO2 alarm, adjustable auto power off function, and mini USB interface. Using included ROTRONIC HW4-Light software, data can be downloaded, saved, and analyzed.

Original Press Release:

ROTRONIC'S New CP11 Handheld Instrument

ROTRONIC’S new CP11 handheld instrument is the latest development of an inexpensive multimeter that simultaneously measures and records CO2, humidity and temperature. It also calculates the dew point and wet bulb temperature. Equipped with the field-tested ROTRONIC HYGROMER® IN-1 humidity sensor, this instrument offers unbeatable value for money. Using the ROTRONIC HW4-Light software that comes with the device, it can be set as required and data can be downloaded, saved and analyzed.


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• Measures and logs CO2, relative humidity and temperature

• Calculates the dew point

• Hygromer® IN-1 humidity sensor

• 18,000 data point memory for CO2, humidity and temperature values

• Maximum, minimum and average value display

• Adjustable audible CO2 alarm

• Display with backlight

• Adjustable auto power off function

• Mini USB interface


Supplied with the instrument or available as download SW2.1 (settings, data download, display of measured values) or compatible with optionally available HW4 software.

For 40 years, ROTRONIC has been combining technical innovation with Swiss quality. The new HygroClip 2, with its integrated AirChip 3000, is setting new standards in terms of accuracy, operating range and OEM flexibility.

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