Feature●Country of Origin: Germany●Heat-wire wind speed sensor, probe head with built-in temperature and humidity sensor●Intelligent probe with built-in calibration data●The button on the handle allows you to operate it when using the multi-point average/hour average●Telescopic rod with scale that can extend up to 3.9 ft (1.0 m)Description
For air conditioners and ventilation ducts: multi-probe measures wind speed, air flow, temperature and humidity. This probe is for multi-environment testo 440.