levenhuk Wezzer Air Pro CN20 Air Quality Noise Monitor User Manual

: June 3, 2024
: levenhuk

Table of Contents

Wezzer Air Pro CN20 Air Quality Noise Monitor
CO2 comfort level indication
Noise comfort level indication
Specifications
Care and maintenance
Battery safety instructions
Levenhuk International Lifetime Warranty
Documents / Resources

Air Pro CN20 Air Quality Noise Monitor
User Manual

Wezzer Air Pro CN20 Air Quality Noise Monitor

1 Power button	8 Humidity
2 UP button	9 Decibel display
3 DOWN button	10 Current CO2 value (ppm)
4 MENU button	11 Noise comfort level indication
5 Power input	12 Positioning sticker
6 CO2 comfort level indication	13 Screws
7 Temperature

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)	400–1000	1001–2000	2001–5000
Indication

Noise comfort level indication

| Decibel readings (dB)
---|---
Green zone 1| <55
Green zone 2| 55–65
Yellow zone 1| 65–75
Yellow zone 2| 75–85
Red zone 1| 85–95
Red zone 2| >95

Specifications

Operating CO2 range	400–5000ppm
Air humidity, units of measurement	% (RH)
Operating humidity range	20… 85%
Temperature, units of measurement	°C
Operating temperature range	–10… +50°C (+14… +122°F)
Power supply	Li-ion battery (2000 mA∙h), DC adapter 5V 1000mA (not included)
USB cable	included

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.

Levenhuk International Lifetime Warranty

All Levenhuk telescopes, microscopes, binoculars, and other optical products, except for their accessories, carry a lifetime warranty against defects in materials and workmanship. A lifetime warranty is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are warranted to be free of defects in materials and workmanship for six months from the purchase date. The warranty entitles you to the free repair or replacement of the Levenhuk product in any country where a Levenhuk office is located if all the warranty conditions are met.
For further details, please visit: www.levenhuk.com/warranty
If warranty problems arise, or if you need assistance in using your product, contact the local Levenhuk branch.

Levenhuk Inc. (USA): 928 E 124th Ave. Ste D, Tampa, FL 33612,
USA, +1-813-468-3001, contact_us@levenhuk.com
Levenhuk Optics s.r.o. (Europe): V Chotejně 700/7, 102 00 Prague 102,Czech Republic, +420 737-004-919,
sales-info@levenhuk.cz
Levenhuk®, Wezzer® are registered trademarks of Levenhuk, Inc.
© 2006–2022 Levenhuk, Inc. All rights reserved.
www.levenhuk.com
20221102

Documents / Resources

| levenhuk Wezzer Air Pro CN20 Air Quality Noise Monitor [pdf] User Manual
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