How to do operation for Digital Air wind speed meter tester?

1) Put battery into battery compartment, LCD will  blink all display for a second.

2) Recover battery door, push " MODE " in 1 second to turn on the unit. LCD will display wind speed, temperature and battery icon. LCD backlight will  lasting for 12 seconds.

3) Setting different wind measurement:  Push " MODE " for 3 seconds until " m/s " starts to  blink. Push " SET " to select desired measurement  unit. To confirm the desired measurement unit by  push " MODE " . Digit symbol:m/s meter per second; km/hr kilometer per hour; ft/min feet per minute; knots nautical mile  per hour;mph mile per hour; Cu Current wind speed, MAX max wind speed, average wind speed.

4) switch option:Press the little conceal key on the rear cabinet to select different temperature unit.

5) Press any key will active LCD backlight for 12 seconds.

6) Measurement: when the wind vane ( impeller ) turns, LCD will instant display wind speed and temperature. When temperature below 0 degree ,wind chill symbol  will shown on the LCD.

7) Push MODE plus SET to turn off the unit.8) Build in 14 minutes auto off Remark: Temperature switch key ( ) conceal in the rear cabinet, please use a little pushpin to press the key for conversion.

 AR816 Handheld Digital Anemometer Wind Speed Temperature Measurement Wind Level Meter Instrument Analyzer