Benetech GM816A Digital Anemometer

Features 1. Air Velocity & Temperature Measurement； 2. Max/Average/Current air velocity measurement; 3. ℃/℉ Temperature unit selection; 4. Five units of air velocity:M/s, Km/h, ft/min, Knots, mph 5. Beaufort scale; 6. Backlight display; 7. Manual/Auto power shut off; 8. Wind chill indication; 9. Low battery indication. Specifications Air velocity      Unit      Range      Resolution      Threshold        Accuracy      M/s      0~30      0.1       0.1        ±5% Ft/min      0~5860      19 39 Knots 0~55 0.2 0.1 Km/hr 0~90 0.3 0.3 Mph 0~65 0.2 0.2   B. Temperature Unit      Range Resolution Accuracy ℃ -10℃~+45℃ 0.2 ±2℃ °F 14°F~113°F 0.36 ±3.6°F Battery  6F22 9V  (Included) Thermometer NTC thermometer Operating temperature  -10℃~+45℃(1 4°F~113°F) Operating humidity  Less than 90%RH Store temperature  -40℃~+60℃(-40°F~140°F) Current consumption Approx. 3mA Weight  136g(Including battery) Dimension  160x52.5x35.5 mm   Packing List Instructions*1 Host*1 Blister packaging*1 9V battery*1