Test the air velocity &
IAQ measuring instrument testo 440.

Test and keep it!
– free of charge.

Easy and secure monitoring and documentation

Order now and you will get our Advanced licence one year for free

Real thermography

starts at 160 x 120 pixels.

Intuitive air velocity and IAQ

The new testo 440 air velocity and IAQ meter, now available!

Surface or Core Temperature?

Click and compare our best Temperature Instruments