Climate measurement improved to the maximum.
The universal air velocity & Indoor Air Quality (IAQ) measuring instrument testo 400
The right probe to hand for every application: Flexible, mutually compatible Bluetooth and cable probes for measuring all climate-relevant parameters
Intelligent calibration concept: Calibration of the probes or probe heads independent of the measuring instrument
What would you like to measure? Find out about your individual application area here.
For us as a technical service provider for air conditioning and ventilation systems, testo 400 is our preferred instrument with its versatility and convenient data management functionalities. It's very easy to use and, most importantly, provides reliable readings.
Jean-Marie Leroy
·France
The testo 400 Universal measuring tool is used to determine reliable results of the indoor climate. Here the measuring programs for PMV/PPD and draught rate are already stored in the instrument. The flexible attachment of various probes is another plus point of the testo 400 for me. If my applications expand in the future, I can simply purchase additional probes. If a probe breaks or needs calibration, I can send it to the service department separately and continue to use the measuring instrument in the meantime.
Wolfgang Lochner
·Germany
The IAQ measuring instrument testo 400 makes you a measurement data expert. Because with its huge memory, we don't have any more headaches about data management and documentation.
Omar El Masry
·England
The wireless probes, simply designed touch display and magnetic mount for attaching to ducts make it quite easy to use. In addition, the fact that the instruments and some accessories can be calibrated as well as the high accuracy, they are crucial for the pharmaceutical customers we support as a service provider for technical facility management.
Annette Groth
·Germany
The universal air velocity & IAQ measuring instrument testo 400 with smart touch technology.