Vane Anemometer Testo 410-2  is a compact and versatile device designed for accurate measurement of air velocity, temperature, and humidity. It is ideal for quick spot checks at ventilation grilles (air outlets) as well as for assessing indoor and outdoor air conditions. Equipped with a permanently installed 40 mm vane, the instrument ensures precise readings even at low airspeeds ranging from 0.4 m/s to 20 m/s. Its long-term stable humidity sensor and NTC temperature sensor (measuring range: -10 to 50 °C) enable reliable monitoring of environmental parameters. Applications: Measuring Airflow in pipes, Ducts, Stacks, Windchill or Beaufort wind force.