Features:Wind Speed/Temperature measurementWing Speed Range: 0-45m/s(±3%)Temperature Range: 0-45(±2)LCD Back LightManual/Auto Power OffWind Speed Unit Selection: m/s, Ft/minKnots, Km/hr, MphMax/Average/CurrentData Hold/ unit switchData logging and clear function, 100 groups data recordsThe design of detachable wind velocity sensor makes it convenient to measure in a long distance.Specifications:General Characteristics:Power Supply: 1 * 9V/6F22 battery (not included)Package Size: 30 * 21.5 * 6.5cm / 11.8 * 8.5 * 2.6inPackage Weight: 840g / 1.8lbPackage List:1 * HoldPeak HP-836A Digital Anemometer1 * English Manual1 * Carrying Case"