The IAQ data logger from Testo is designed for long-term monitoring of indoor air quality across a wide range of parameters. Fully configurable via the testo 400 universal IAQ instrument, this stand-alone data logger offers reliable measurements for up to two weeks without needing to remain connected to the measuring device. This allows users to continue working with the testo 400 instrument on other measurements while the logger records data independently.

With the capability to connect up to six fixed cable probes simultaneously (probes sold separately), the IAQ data logger can capture detailed information on comfort levels, air turbulence, radiant heat, CO₂, CO, light intensity, air flow velocity, humidity and temperature. Measurement intervals and periods are easily programmed through the testo 400, and all data can be retrieved, analysed and documented once logging is complete.

Ideal for compliance with standards such as EN ISO 7730, ASHRAE 55 and DIN 33403, this compact yet powerful logger is perfect for PMV/PPD evaluations, local discomfort analysis and NET measurements. A practical tripod accessory is also available for optimal installation and positioning of the data logger and probes.