Digital anemometer TSI95159515 and 9525 is economical digital anemometer, does not have very high precision and accuracy.Use it as a professional and technical personnel biological safety counter wind speed, spray chamber or IAQ and ventilation system of the ideal test instrument.The integral, scalable probe type 9515 101.6 cm long, used to test the general probe inaccessible places.Type 9525 probe scalable, three inches long, meet the essence of UL safety certification, can be used in group C, D, Ⅰ level 1 and 2 area;E, F and G group Ⅱ level area;Ⅲ level test