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440 CO₂ kit with Bluetooth® for evaluating the indoor air quality. The Testo 440 air velocity & IAQ measuring instrument recognizes probes automatically and its structured measurement menus simplify the adjustment of air conditioning and ventilation systems. Up to 3 probes can be connected simultaneously to the measuring instrument. The versatile Bluetooth® handle allows the connection of many different wireless probe heads for all applications.

• Absolute pressure compensation, calculation of wet bulb temperature, dew point, absolute humidity
• Wireless probe, internal data storage and USB port for data export
• Can be extended with a large portfolio of digital probes
• Structured measurement menu for long-term measurements
• Parallel determination of CO₂ concentration, air humidity and air temperature

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Test & Measurement

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Testo 440 air velocity & IAQ measuring instrument ( 3x AA batteries, USB cable and calibration protocol), CO2 probe with Bluetooth® ( temperature and humidity sensor (consisting of CO2 probe head and Bluetooth® handle), 4x AA batteries, table stand and calibration protocol ), Combi-case for testo 440 and multiple probes.