Description: Simultaneous display of Air Flow or Air Velocity plus Ambient Temperature and Relative Humidity; Easy to set Area dimensions are stored in the meter's internal memory for the next power on; Resolution of 0.01m/sec; 20 points average for Air Flow; Super large (9999 counts) LCD Back light Display; Specification: Max/Min Hold and Display Hold Function; Dual Display; Back light function; Auto Power off; Temperature scale switch Overflow Indication: "OL" will be shown in LCD; Low battery voltage indication; USB Interface & PC-Software; Size(H*W*D): Approx. 17x8.6x4.6cm / 6.69x3.39x1.81inch Package Includes: 1 Piece of Digital Anemometer 1 Piece of USB cable 1 Piece of User Manual