Y9RE Anemometer w/ w/o Wireless Blue-tooth Digital Handheld Wind Speed Meter Compatible w/ Wind Chill Air Velocity Temp     OOTDTY        Features: 100% brand new and high quality   There are 2 types, UT363 & UT363BT, UT363BT with blue-teeth function and backlit, UT363 without.   Magnetic induction type wind speed sensor and N-TC negative temperature coefficient sensor.   12 Winds Article dynamically indicating eliminates the trouble of complicated conversion.   Dual display of wind speed and temperature.   Light weight, small size makes this Wind Guage Meter easy for you and your family to take outside for outdoor actitivities.   It is widely used in mining, electric, iron and steel, petrochemical, energy saving,navigation, fan manufacturing, exhaust ventilation, sporting and many more industries.      Specification: Material: Plastic    Size: 16x5.2cm/ 6.3x2.05 in   Display: LCD Display   Wind Speed Range: 0～30m/s, 1.4～108km/h, 0.7～58knots, 0.8～67mph, 78～5905ft/min   Wind Speed Unit: m/s, Knots, km/h, mph, ft/min   Wind Scale: 0～12   Accuracy: ±5%rdg + 0.5   Temperature Range: -10～50°C / 14～122°F   Resolution: 0.1°C / 0°F   Accuracy: ±2°C / ±4°F   Auto Power Off: 5min   Sampling Rate: 0.5s   Overload Indication: O-L   Altitude: Max.2000m   Operating Temperature: 23°C±5°C(≤80%RH)   Storage Temperature: -20～60°C(<>   Power Supply: 3 x 1.5V AAA Batteries (Not Included)   Operation System: Andriod 4.3, ios 8.4, Blue-tooth 4.0 or more      Package Includes: 1x Wind Speed Meter      note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid.   Due to the difference between different monitors, the picture may not reflect the actual color of the item.