Testo 405i – Hot-wire Anemometer Smart and Wireless Probe

The testo 405i Smart Probe hot-wire anemometer is a wireless instrument for measuring air flow velocity, temperature, and volume flow. It is equipped with a telescopic shaft which extends to 15” for easy in-duct testing. You can reliably determine timed and multipoint flow traverses.

Key Features:

  • Measures air velocity, volume flow, and temperature
  • Measures in-duct air flow and automatically calculates volume flow (enter duct dimensions simply)
  • Small dia. (<0.5”) and 15” telescopic shaft length is ideal for in-duct flow averaging and timed traverse
  • Perform air duct leakage tests



14,250 din. bez PDV-a

SKU: 0560 1405.

Users can read the measurements using the testo Smart Probes App installed on their smart device. The app lets users configure duct dimensions to calculate volume flow measurements. Use the testo 405i along with the testo 605i thermo-hygrometer to determine cooling and heating performance. The testo 405i works on smart devices with either Android or Apple operating systems.

  • testo 405i
  • Bluetooth hot-wire anemometer with App
  • incl. 3 AAA batteries and certificate of calibration
Measuring range
  • -20 to +60 °C
  • 0 to 30 m/s
  • ±0.5 °C
  • ±(0.1 m/s + 5 % of mv) (0 to 2 m/s)
  • ±(0.3 m/s + 5 % of mv) (2 to 15 m/s)
  • 0.1 °C
  • 0.01 m/s

Here you can download the brochure for testo 405i.