Thermo-Anemometer, Not Data Logging, 0.2 - 30.0 m/sec Air Velocity Range6 in 1 multi function meter: air velocity temperature, ambient temperature, relative humidity, contact temperature and light 4 in 1 multi function meter: anemometer, humidity meter, light meter and type K digital thermometer Data hold, Record (Max Min) Integral vane design for one hand operation Push button operation Pocket sized Includes battery Air Velocity Range: 80 to 5910 fpm; 0. 4 to 30 m s; 0. 9 to 67 mph; 1. 4 to 108 km h; 0. 8 to 58. 3 knots