Testo 400 Indoor Air Quality IAQ / HVAC Monitor Best Seller Close and shake the jar

Close and shake the jar to release the dyes and observe the color change

Consisting of one controller plus cradles

advanced feature set

allowing you to reach conduits beyond the range of your vehicle

thanks to its intuitive user interface and simple

Testo 400 Indoor Air Quality IAQ / HVAC Monitor Best Seller Close and shake the jarThe Testo 400 allows rapid measurement with accurate temperature probes. The instrument can extrapolate the final value for faster response times. It has the highest precision due to system calibration (measuring instrument + probe). The measuring instrument and the display are integrated within the probe, which is where the calibrated data is saved. The Testo 400 is a very practical one hand operation with no awkward cable connections. It is a robust