Feature: 1. Accurate measurements can store up to 50,000 sets of data. 2. Support for USB connection to the computer for real-time data loading. 3. The meter is a digital anemometer for measuring wind temperature, humidity, wind speed and air volume. 4. Professional measuring instrument with large LCD display and backlight, multi-unit switching function. 5. With the function of reading hold, maximum value, minimum value and low battery indicator. 6. Useful and wide range of application, widely used for hiking, sailing, drone, ventilation system, etc. Specification: Condition: 100% Brand New Item Type: Anemometer Material: ABS Model: PM6252B M/s (Meter per Second): 0.80~30.00 ±(2.0% reading + 50 characters) Ft/m (Feet per Minute): 78~5900 ±(2.0% reading + 5 characters) Ft/s (Feet per Second): 1.30~98.50 ±(2.0% reading + 50 characters) Km/h (Kilometer per Hour): 1.40~108.00 ±(2.0% reading + 50 characters) Mile/h (Miles per Hour): 0.90~67.20 ±(2.0% reading + 5 characters) Knot (Nautical Miles per Hour): 0.8~58.30 ±(2.0% reading + 50 characters) Air Temperature: -10~60℃ ±1.5℃/-14~140℉ ±2.7℉ Air Relative Humidity: (20~80)%RH ±3%RH at 25℃ / (<20 or >80)%RH ±5%RH at 25℃ Resolution: 0.01m/s; 1ft/m; 0.01knots; 0.01km/h; 0.01ft/s, 0.1℃/0.1℉, 0.1%RH CFM: 0 to 99990/0 to 9.999ft² CMM: 0 to 99990/0 to 9.999ft² CMS: 0 to 9999/0 to 9.999m² Work Height: Maximum 2000m / 6561.7ft Work Mode: Frequency of wind speed conversion Display: LCD Maximum Show Value: 9999 Sampling Time: About 0.4s/time Flow Area Setting: Yes Maximum/Minimum Function: Yes Display Backlight: Yes Auto Power Off: Yes ℃/℉ Selection: Yes Ambient, Dew Point and Wet Temperature Selection and Bulb: Yes Low Battery Indication: Yes USB Interface: Yes Power Supply: 1 x 9V 6F22 Battery (Not Included) Operation Environment: 0℃-40℃, 0-85%RH (no moisture condensation) Detector (Fan) Operation Environment: -20℃-80℃, 0-95%RH (no moisture condensation) Storage Environment: -10℃-50℃, 0-80%RH (no moisture condensation) Wind Speed Unit Switchable: m/s, km/h, mil/h, ft/m, ft/s or knots Area Unit Switchable: m², ft² Temperature Unit Switchable: Celsius(℃) or Fahrenheit(℉) Air Volume Unit Switchable: CMS, CMM, CFM Product Size: Approx. 170 x 86 x 39 mm / 6.7 x 3.4 x 1.5 in Weight: Approx. 357g / 12.6oz Package List: 1 x Multifunctional Digital Anemometer (Battery Not Included)1 x Portable Bag1 x CD1 x USB Cable1 x English User Manual