For measuring air velocity and volume flow in ventilation ducts.

Measuring range from 0.6 to 50 m/s.

The set includes: testo 440 air velocity and IAQ measuring instrument, 3 x AA batteries, USB cable, Vane probe (Ø 16 mm) with fixed cable (cable length 1.7 m), including telescope (can be extended to 0.85 m) , basic case for testo 440 and 1 probe.