Pocket Digital Anemometer Windsurfing Sailing Kite Flying Air Velocity Guage Tools Airflow Wind Speed NTC Temperature Meter Description: This anemometer is very small and light. It is an ideal tool forwindsurfing, sailing and kite flying. You can also use it for industrial andhome purposes such as measuring speed and temperature of CPU computer fans,air-conditioners, airflow over the roof or walls. Features: Mini Digital Anemometer Air Velocity & Temperature Measurement (Comes with Thermometer Feature) Max/Average air velocity measurement C/F Temperature unit selection Specifications: Air Velocity Specification: Range:0 - 30 m/s, 0 - 90 km/h, 0 - 5860 ft/min, 0 - 65 mph, 0 - 55 Knots. Resolution:0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 Knots. Threshold:0.1m/s, 0.3 km/h, 39 ft/min, 0.2 mph, 0.1 Knots. Accuracy:+/- 5%. Air Temperature Specification: Thermometer:NTC Thermometer. Range:Between -10C and 45C (between 14F and 113F) Storage Temperature:Between -40C and +60C, between -40F and 140F. Resolution:0.2C, 0.36F. Accuracy:2C, 3.6F Current Consumption:About 3mA Operating Humidity:Less than or equal to 90% RH. Item Size: 49 * 21* 112.1mm Weight: 98g Package Included: 1 x hand-held anemometer(Battery Not Included) 1 x Instruction Manual