1、High accuracy and it has fast response. 2、LCD display with backlight can provide clear reading for you. 3、It has max/min/data hold function 4、The meter shuts off automatically after 15 minutes which is energy-saving 5、Widely used for the air velocity and temperature measurement at constructional-engineering, factory, school, public transport, etc. Features: 1. High accuracy and it has fast response. 2. LCD display with backlight can provide clear reading for you. 3. It has max/min/data hold function 4. The meter shuts off automatically after 15 minutes which is energy-saving 5. Widely used for the air velocity and temperature measurement at constructional-engineering, factory, school, public transport, etc. Specification: Condition: 100% Brand New Model: UA965 Air Velocity Range Resolution Accuracy 0.4-30.0 m/s 0.1 m/s ±( 3% + 0.3 m/s ) 1.4-108 Km/h 0.1 Km/h ±( 3% + 1.0 Km/H ) 0.9-67.0 MPH 0.1 MPH ±( 3% + 0.4 MPH ) 0.8-58.0 knots 0.1 knots ±( 3% + 0.4 knots ) 80-5900 ft/min 1.0 ft/min ±( 3% + 40 ft/min ) Temperature Range -20℃-70℃/-4℉-158℉ Temperature accuracy ±1.5℃/2.7℉ Resolution 0.1 Data update 300ms Battery life About 60 hours Enable/Disable Auto power off The meter shuts off automatically after 15 minutes inactivity under auto power off mode, disable auto power off is available Power Supply 3 *AAA(1.5V)(not included) Operating conditions Temp:-20℃-60℃/-4℉-140℉, Humidity:10%RH-90%RH Storage conditions Temp:-20℃-60℃/-4℉-140℉, Humidity:10%RH-75%RH Size: Approx. 178.5 * 56 * 30.5mm / 7.0 * 2.2 * 1.2in Weight: Approx. 147g / 5.2oz Package List: 1 * Wind Speed Meter 1 * User Manual