Feature: Measurement of wind velocity,temperature and flow Unit conversion of wind velocity,temperature and flow Measurement of maximum and minimum wind velocity Measurement of 2/3 V max and average wind flow Data holding,storing and deleting function Low battery indicating function Auto power off function (Power off automatically if no any operation for 10 Minutes) Memory of 500 records Backlight function Connecting to PC by USB cable Audio key pressing alert Large LCD display Wind handle can elongate Specification: Wind Speed Range 0.3~45m/s Wind Volume Range 0~999900m3/min Wind Speed Accuracy 2.5%0.1dgt Wind Speed Units m/s, Ft/min, Knots, km/hr, Mph Wind Volume Units CMM / CFM Wind Speed Resolution 0.001m/s Max & Min Measuring yes Lower Battery Indication yes Operating Current 18Ma Temp. Measuring Range 0~45 Temp. Resolution 0.1C / HSelection yes Backlight Display yes Auto/Manual Power Off yes Data Storage yes USB Data Connection yes Power 9V Battery (not include due to air limit) Low battery indicating : 4.4v0.2V Stand by current 2uA Dimensions: Meter :149.89*80.38*38.92mm Vane: 251*72*30mm Product Weight 320.5g (Not Included Battery ) Wind flow Range CMM:0-999900m3/MIN CFM: 0-999900ft3/min Unit Range Resolution Area CFM(FT3/MUM 0-999900 0.001-100 0.001-9999 CMM(M3/MIN) 0-999900 0.001-100 0.001-9999 Air Temperature Range ( Wind temperature ) Unit Range Resolution Accuracy 0~ 45 0.1 1.0 H 32H~113H 0.1 1.8H Wind Velocity range Unit Wind Velocity Resolution Lowest point of start value Accuracy m/s 0~45 0.001 0.3 3%0.1dgts Ft/min 0~8800 0.01/0.1/1 60 3%20dgts Knots 0~88 0.01/0.01 0.6 3%0.2dgts Km/h 0~140.0 0.001 1.0 3%0.4dgts Mph 0~100 0.001/0.01 0.7 3%0.2dgts Unit Conversation m/s Ft/min Knots Km/h Mph 1m/s 1 196.87 1.944 3.60 2.24 1Ft/min 0.00508 1 0.00987 0.01829 0.01138 1 Knots 0.5144 101.27 1 1.8519 1.1523 1km/h 0.2778 54.69 0.54 1 0.6222 1 Mph 0.4464 87.89 0.8679 1.6071 1 Operation Conditions : Temperature Humidity Hose 0-50 (32H~122H) 80% RH Fan 0-60 (32H~140H) Storage Conditions : Temperature -40~60 (-40H~140H) Humidity 80%RH Package list: 1 * Anemometer 1 * Probe 1 * User manual 1 * CE Certification 1 * Data line Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.