This type of sensor can be used for a series of relative humidity measurements with an accuracy of 2%, and can maintain measurement accuracy over a wide range of humidity (20 TO 90% RH). It has a strong adaptability to pollutants in the air, so it can be used in aggressive environments. All stainless steel tube design and copper filter mesh are convenient for cleaning. 4-20MA transmitter two core wire output, IP65 protection level, with M20 cable / conduit can be inserted into the hole.