Mastech MS6252B Digital Anemometer

Digital Anemometer Mastech MS6252B Feature MS6252B is a professional Digital Anemometer with built-in high quality T& RH sensor which indicates Air-Temperature and relative Humidity while testing Air-Velocity/ Flow. Features: fSimultaneous display of Air Flow or Air Velocity plus Ambient Temperature and Relative Humidity; fEasy to set Area dimensions are stored in the meter' s intermal memory for the next power on; fResolution of 0.01m/ sec; f20 points average for Air Flow; fSuper large ( 1999 counts) LCD Backlight Display; fMax/ Min Hold and Display Hold Function; fDual Display; fBacklight function; fAuto Power off; fTemperature scale switch: ? / ? ; fOverflow Indication: " OL" will be shown in LCD; fLow battery voltage indication; fUSB Interface & PC-Software; fSize( H* W* D) : 165mm* 85mm* 38mm fWeight: 200g f9V battery, USB cable, PC-software Specification Air Velocity Range Accuracy MS6252B m/ s( meter per second) 0.40~ 30.0 3%  ft/ m( feet per minute) 80~ 5900 3%  Km/ h( kilomenters per hour) 1.4~ 108.0 3%  Mil/ h( miles per hour) 0.9~ 67.0 3%  Knots( nautical miles per hour) 0.8~ 58.0 3%  Air Temperature -20 to 60? ( -4 to 140? ) 1.0? ( 2.0? )  Air Relative Humidity 0 to 100% RH 3%  Air Flow Range Area  CFM 0 to 99990 0 to 9.999ft  CMM 0 to 99990 0 to 9.999?  CMS 0 to 9999 0 to 9.999?