Features: Simultaneous measurement and real-time display of wind speed and wind . Four wind speed units(ms Knots kmh Mph) and two units(℃ ℉)can be switched at will. Maximum / minimum / average value measurement function one key to switch. 180° rotatable probe with high sensitivity six fan bl-ades for more accurate measurement and faster response. Backlight display and data hold function for easily reading the measured value. 10 minutes automatic shutdown function settings to save power. Compact design with detachable protective sleeve easy to carry. Back with a folding bracket for conveniently putting on the desk. Widely used in electricity iron and steel petrochemicals energy marine fan manufacturing ventilation system underground warehouses and other industries. Specifications: Material: ABS Measurement Method: Air velocityair Air Velocity Measurement : 0.3~30.0ms Air Velocity Error: ±3% Air Velocity Unit Selection: Ms Knots kmh Mph Resolution: Air velocity: 0.1ms : 0.1℃ Air Measurement: 0~45℃ Error: ±2℃ MaxminAvg: Yes ℃/℉ Unit Conversion: Yes Backlight Display: Yes Analog Bar: Yes Low Battery Prompt: Yes Auto Shutdown: Auto shutdown after 10 minutes Battery: 2 * 1.5V AAA battery (NOT included) Item Size: 177 * 55 * 25mm / 6.97 * 2.17 * 0.98in Item Weight: 180g / 6.35oz Package Weight: 300g / 10.58oz Package Size: 21.5 * 9 * 5cm / 8.46 * 3.54 * 1.97in Packing List: 1 * Anemometer 1 * Storage Pouch 1 * Manual (English)