The testo 400 is the universal measuring instrument for all IAQ professionals. Measure, analyze and document all IAQ and comfort level parameters using just one instrument – simply, conveniently and in compliance with the standards. High-quality measuring technology, intuitive measurement assistants, versatile documentation options and a comprehensive selection of IAQ probes make the testo 400 the perfect partner for your day-to-day work.
Smart, intuitive measurement programs including HVAC grid measurement as per EN ISO 12599 and ASHRAE 111, PMV/PPD and turbulence as per EN ISO 7730 and ASHRAE 55
High-precision, location-independent and integrated differential pressure sensor
Measure all IAQ-related parameters – with our wide range of probes for all IAQ measurements
Document measuring values directly on the customer's site and send them by e-mail, or further analyze them using the testo DataControl PC software
