Easily determine the U-value of building components. Thanks to the innovative wireless sensor and patented U-value sensor, the right measuring device delivers precise results directly to the display – quickly, conveniently and reliably.

The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity and dew point – in compressed air as well. State-of-the-art technology and a large selection of probes, which are available as an option, enable this wide variety of measuring possibilities.

This ISO calibration certificate is used to calibrate your measuring device or sensor. Calibration is carried out in accordance with the ISO standard.

ISO calibration certificate U-value sensor - with 2 measuring points

ISO calibration certificate/U-value probe

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