These Multifunction Reference Class Monitors have easy installation and are generally compact in size. Their digital displays and LEDs to indicate various statuses make them easy to operate and user friendly.
See the new universal air flow and IAQ measuring Testo 400 instrument and its broad selection of precision probes developed with just one objective in mind: To make all measurement tasks in the ventilation and air conditioning sector easier and less complicated than ever before. With the Testo 400, you can now carry out work steps which were previously only possible with a PC and software and are now done directly on site with just one measuring instrument!
The built-in personal smart helper will assist you with obtaining error-free results. The more demanding the measurement, the more the measurement assistant in the instrument supports you in configuration, execution and evaluation of results.