Use the High-precision humidity/temperature probe with the compatible testo 440 multifunction measuring instrument. Bluetooth works up to 65 feet. The humidity sensor has an of accuracy of 0.6% RH + 0.7% of m.v. in the range between 0 and 90% RH and is traceable to international humidity standards, such as ILAC, PTB and NIST.
Use the High-precision humidity/temperature probe with the compatible testo 440 multifunction measuring instrument. Bluetooth works up to 65 feet. The humidity sensor has an of accuracy of 0.6% RH + 0.7% of m.v. in the range between 0 and 90% RH and is traceable to international humidity standards, such as ILAC, PTB and NIST.
Use the High-precision humidity/temperature probe with the compatible Testo 440 multifunction measuring instrument (sold separately) to measure relative humidity and air temperature. Wet bulb temperature, dew point and absolute humidity are calculated at the same time. Measurement Values are transmitted via Bluetooth, up to 65 feet. With the proven quality from Testo, you can depend on reliable measurement results, this humidity/temperature probe is equipped with our high-precision, long-term stable humidity sensor. This allows you to measure humidity with an accuracy of ± (0.6% RH + 0.7% of m.v.) in the range between 0 and 90% RH and is traceable to international humidity standards, such as ILAC, PTB and NIST.