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Levenhuk Wezzer Air PRO CN20 Air Quality Noise Monitor
EN
Caution! Please remember that mains voltage in most European countries is 220–240V. If you want to use your device in a country with a
different mains voltage standard, remember that use of a converter is absolutely necessary.
Charging the device. Connect the power cable to the device and the DC adapter (not included) via a USB plug and connect it to the AC power
supply. Attention! The device operates from the AC power supply, as the voltage of the computer's USB port is insufficient for the proper
operation of the device.
Using. Press (1) to turn the device on/off. Press (2)/(3) to adjust the brightness level.
Settings. Press (4) to enter the settings. Press (4) to choose the measurement time of the sound sampling. There are two modes: fast
and slow. Use the fast mode to measure sudden changes in sound levels, e.g., construction equipment sounds. The slow mode is used to
measure sound signals that change slowly, e.g., noise from photocopiers, printers, etc.
Calibration. When turning the device on for the first time, do not turn it off or restart it within 24 hours. The calibration will be carried out
automatically.
CO2 comfort level indication
Current CO2 value (ppm)
Indication
Noise comfort level indication
Green zone 1
Green zone 2
Yellow zone 1
Yellow zone 2
Red zone 1
Red zone 2
Specifications
Operating CO2 range
Air humidity, units of measurement
Operating humidity range
Temperature, units of measurement
Operating temperature range
Power supply
USB cable
The manufacturer reserves the right to make changes to the product range and specifications without prior notice.
Care and maintenance
Take the necessary precautions when using the device with children or others who have not read or who do not fully understand these
instructions. Do not try to disassemble the device on your own for any reason. For repairs and cleaning of any kind, please contact your local
specialized service center. Protect the device from sudden impact and excessive mechanical force. Store the device in a dry cool place. Only
use accessories and spare parts for this device that comply with the technical specifications. Never attempt to operate a damaged device or
a device with damaged electrical parts! If a part of the device or battery is swallowed, seek medical attention immediately. Children should
use the device under adult supervision only.
Battery safety instructions
Always purchase the correct size and grade of battery most suitable for the intended use. Always replace the whole set of batteries at one
time; taking care not to mix old and new ones, or batteries of different types. Clean the battery contacts and also those of the device prior
to battery installation. Make sure the batteries are installed correctly with regard to polarity (+ and –). Remove batteries from equipment
that is not to be used for an extended period of time. Remove used batteries promptly. Never short-circuit batteries as this may lead to high
temperatures, leakage, or explosion. Never heat batteries in order to revive them. Do not disassemble batteries. Remember to switch off
devices after use. Keep batteries out of the reach of children, to avoid risk of ingestion, suffocation, or poisoning. Utilize used batteries as
prescribed by your country's laws.
400–1000
Decibel readings (dB)
<55
55–65
65–75
75–85
85–95
>95
400–5000ppm
% (RH)
20... 85%
°C
–10... +50°C (+14... +122°F)
Li-ion battery (2000 mA∙h), DC adapter 5V 1000mA (not included)
included
1001–2000
4
2001–5000
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