testovent 410, volume flow funnel, Ø 340 mm/330x330 mm, incl. case

Flexible configuration &ndash; Easily set up via the testo 400 universal IAQ instrument.

The testo 440 is a multifunctional air velocity and IAQ measurement instrument designed for professionals working in ventilation, air conditioning, and indoor environmental quality. It allows for precise, reliable, and standard-compliant measurements across a wide range of applications, from duct airflow to long-term CO₂ monitoring and comfort level analysis.

The testo 440 100 mm Vane Kit with Bluetooth&reg; offers a complete, wireless solution for measuring volume flow, air velocity, temperature, and humidity at air outlets. Ideal for HVAC professionals, the kit includes a multifunction measuring instrument and a Bluetooth&reg; vane probe, securely housed in a durable case for immediate, on-site use.

The testo 440 16 mm Vane Kit offers precise measurement of air velocity, volume flow, and IAQ parameters in ventilation ducts. Featuring a compact multifunction instrument and a telescopic vane probe, it&#39;s ideal for HVAC professionals who need reliable, flexible, and wireless measurements.

The testo 440 Air Flow ComboKit 1 with Bluetooth&reg; is a versatile, ready-to-use solution for air velocity and flow measurements in ducts and at outlets. It includes a multifunction instrument, hot wire and 100 mm vane probes (with Bluetooth&reg;), plus a telescopic extension&mdash;making it ideal for HVAC professionals focused on precise ventilation assessments.

The testo 440 Air Flow ComboKit 2 with Bluetooth&reg; is an advanced air velocity measurement kit designed for precise ventilation assessments in ducts and at outlets. It includes the testo 440 multifunction instrument, a 100 mm vane probe with Bluetooth&reg;, a 16 mm vane probe with telescopic extension, and a durable case&mdash;ideal for HVAC professionals who need flexibility and accuracy on the job.

The testo 440 CO₂ Kit with Bluetooth&reg; is the ideal solution for precise monitoring of indoor air quality. With a CO₂ probe featuring integrated temperature and humidity sensors, plus Bluetooth&reg; connectivity and intuitive operation, this kit is perfect for facility managers, HVAC professionals, and indoor climate specialists.

The testo 440 Hot Wire Kit is a versatile and professional measuring solution designed for accurate monitoring of air velocity, temperature, and IAQ parameters in ventilation ducts. It includes a multifunction instrument and a telescopic hot wire probe, ideal for HVAC and indoor air quality assessments.

The testo 440 Humidity Kit with Bluetooth&reg; provides a complete and accurate solution for monitoring temperature and humidity in various environments including storage areas, HVAC ducts, and refrigeration systems. This user-friendly kit combines the testo 440 multifunction instrument and a Bluetooth&reg; humidity/temperature probe, all stored in a compact, ready-to-use case.

The testo 440 Indoor Comfort ComboKit with Bluetooth&reg; is a complete measurement solution for assessing indoor air quality and comfort levels in workplaces. It includes the testo 440 instrument, a Bluetooth&reg; CO₂ probe with temperature and humidity sensors, and a turbulence probe, all packed in a convenient carrying case. This kit provides reliable measurements for CO₂ concentration, temperature, humidity, and turbulence, ideal for evaluating comfort and air quality in indoor environments.

The testo 440 Lux Kit is a compact, precise solution for measuring illuminance in workspaces. With standard-compliant accuracy and an intuitive interface, it&rsquo;s ideal for evaluating lighting conditions across offices, production areas, and more. The included lux probe and multifunctional measuring instrument come neatly packed in a sturdy case for immediate use.

Precise, reliable measurement of all air velocity and IAQ parameters with the testo 440 dP: the multifunction measuring instrument features an integrated differential pressure sensor and intuitive operation with clearly structured measurement menus. Adjusting air conditioning and ventilation systems, monitoring air quality or carrying out comfort level measurements &ndash; thanks to versatile options for combining with high-quality, digital probes, you are ideally equipped to carry out your measuring task (please order probes separately).

The testo 440 delta P Air Flow ComboKit 1 with Bluetooth&reg; provides a complete, wireless solution for measuring air velocity, differential pressure, humidity, and temperature in ventilation ducts and at air outlets. It includes the testo 440 IAQ measuring instrument, a 100 mm vane probe, a hot wire probe (&Oslash; 9 mm), and a differential pressure sensor, all stored in a convenient, rugged carrying case.

The testo 440 delta P Air Flow ComboKit 2 with Bluetooth&reg; is a versatile, all-in-one solution for measuring air velocity, differential pressure, humidity, and temperature in ventilation ducts, air outlets, and workrooms. The kit includes the testo 440 IAQ measuring instrument, two vane probe heads (&Oslash; 100 mm and &Oslash; 16 mm), a humidity/temperature probe head, and a differential pressure sensor. All components are stored in a durable carrying case for easy transport.

The testo 440 Laboratory Kit (Product no. 0563 4412) is designed for precise climate measurements in laboratory environments. It features a Pt100 temperature sensor for accurate temperature readings, a comprehensive range of measurement options, and wireless connectivity with Bluetooth&reg; probes for seamless data collection and management. The kit is expandable with additional probes and comes with a structured, easy-to-use measurement menu.

The testo 400 is the ultimate tool for professionals in indoor air quality (IAQ) measurement. It offers a wide range of features including intuitive measurement programs, high-precision sensors, and the ability to connect a variety of probes. It&rsquo;s the ideal instrument for measuring, analysing, and documenting all IAQ and comfort parameters, providing full compliance with standards.

Ideal kit for IAQ professionals, with a focus on indoor air quality and comfort level. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one CO₂ probe (with Bluetooth&reg; handle), one turbulence probe and one globe thermometer &Oslash; 150 mm (both with fixed cable). Use the measuring tripod to ensure standard-compliant positioning of the probes. In combination with the IAQ data logger, which is available to order separately, long-term measurements up to 2 weeks can be recorded, even without the IAQ measuring instrument.

Ideal kit for IAQ professionals, with a focus on indoor air quality and comfort 
level. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one CO2 probe (wired), one turbulence probe and one globe thermometer Ø 150 mm (both with fixed cable). Use the measuring tripod to ensure standard-compliant positioning of the probes. In combination with the IAQ data logger, long-term measurements up to 2 weeks can be recorded, even without the IAQ measuring instrument.

Ideal kit for IAQ professionals, with a focus on air flow measurement. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one vane probe head (&Oslash; 16 mm), one vane probe head (&Oslash; 100 mm) and one high-precision humidity/temperature probe head &ndash; all three can be attached to the Bluetooth&reg; handle supplied. For measurements at ceiling outlets, simply combine the 100 mm vane probe with the telescope (can be extended up to 1.0 m) and the 90&deg; angle.

Ideal kit for IAQ professionals, with a focus on air flow measurement. You will receive the testo 400 universal IAQ measuring instrument with intuitive measurement menus, one hot wire probe head (including temperature and humidity sensor), one vane probe head (&Oslash; 100 mm) and one high-precision humidity/temperature probe head &ndash; all three can be attached to the Bluetooth&reg; handle supplied. For measurements at ceiling outlets, simply combine the 100 mm vane probe with the telescope (can be extended up to 1.0 m) and the 90&deg; angle.

The Testo digital vane probe (&Oslash; 16 mm, wired) is designed for precise airflow and humidity measurements in confined ventilation ducts. It connects via fixed cable to a compatible Testo multifunction measuring instrument (sold separately). With its integrated, scalable telescope that extends to 0.85 m, this probe enables effortless insertion and accurate depth control within ducts. It covers a wide measurement range from +0.6 to +50 m/s, providing fast, intuitive volume flow calculations through structured menu navigation. The intelligent calibration concept enhances operational efficiency by requiring calibration of the probe only&mdash;not the measuring instrument&mdash;allowing continuous system usage.

Compact 16 mm wired digital vane probe with integrated telescope &ndash; ideal for precise measurement of air velocity, volume flow, and humidity in ventilation ducts.

Velocity / Volume flow	Measuring range 0.6 to 50 m/s
	Accuracy ±(0.2 m/s + 1 % of mv) (0.6 to 40 m/s) ±(0.2 m/s + 2 % of mv) (40.1 to 50 m/s)
	Resolution 0.1 m/s

General technical data	Storage temperature -10 to +70 °C
	Weight 150 g
	Dimensions 330 x 16 x 16 mm
	Operating temperature -10 to +70 °C
	Cable length 1.7 m
	Length telescope 850 mm
	Probe head diameter 16 mm
	Diameter telescope 12 mm
	Product colour Black; silver

Vane probe (Ø 16 mm, digital) - wired

Vane probe (Ø 16 mm, digital) - wired

Velocity / Volume flow

Velocity / Volume flow

General technical data

General technical data

Accessories