Testo 405 – Pocket Sized Thermal Anemometer


Testo 405 – Pocket Sized Thermal Anemometer features a permanently mounted telescope and enables you to measure airflow, volumetric flow, and air temperature. The measuring range for the flow is between 0 to 10 m/s, volumetric flows are calculated up to 99,990 m3/h.

Applications:  Measures flow measurements in ventilation ducts measure air velocity in rooms for checking indoor air quality and Low air velocities, at draughty windows, for example, are quickly located and accurately measured using the thermal anemometer.

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Product Description

Testo 405 Thermal Anemometer with an extendable telescope (up to 300 mm) makes the thermal anemometer particularly suitable for flow measurements in ventilation ducts. The illuminated display can be swiveled into various positions, ensuring that the readings can be read comfortably. The duct(included in the delivery) offers key practical advantages. You can use this to position the telescope in the ventilation duct and obtain precise measurement results.


•   Measurement of air velocity, volumetric flow and air temperature simultaneously.

•   For measurement in ventilation ducts and in rooms.

•   Particularly precise measurement in the range between 0 and 2 m/s.

•   Telescope extendible up to 300 mm.

Additional Information

Weight0.509 kg
Model No

Temperature - NTC


Operating Temperature

Battery Life

Storage Temperature


Length probe shaft

Diameter probe shaft

Diameter probe shaft Tip

Velocity - Thermal Anemometer


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