Mini Digital Anemometer 0.3 to 30m/s Wind Speed Gauge Temperature Air Flow Tester Thermometer for HVAC CFM Air Flow Velocity Wind Chill Meter-AS816-

Specificatio n: ModelAS816 Wind Speed Measuring  0.3-30m/s                                                                             Wind Speed Accuracy   ±5% + 0.1  Wind Speed Units  m/s, Ft/min, Knots, km/hr, Mph   Resolution   0.1m/s  Power   3*1.5 AAA Battery (not included)  Product Weight / Size     117g /162*47*25mm  LCD display          Wind / temperature measurement range:  Unit   Range                     Weight       59g (not including battery)  Battery      3V (2*AAA)  The operating environment:   humidity:  40% ~ 85%   temperature:  - 10 ? to 50 ? (14 ? ~ 122 ?)  Storage environment:  humidity:  10% ~ 90%  temperature: -  20 ? ~ 60 ? (140 ? - 4 ~ ?) Package list: 1 * Anemometer 1 * Probe 1 * User manual 1 * CE  Certification