1) Wind speed & temperature measurement
2) Wind chill indication.
3) Temperature display in Celsius or Fahrenheit
4) Different wind speed measurement unit
5) Measure wind speed in: Current/Average/Max
6) Low battery warning
7) LCD back-light
8) Auto/Manual off

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 5 seconds.
3) Setting different wind measurement: Push MODE for 3 seconds until "m/s" start 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 average wind speed.

4) ℃/℉ switch option: Press the ℃/℉ key to select different temperature unit.
5) Press any key will active LCD back-light for 5 seconds.
6) Measurement: when the wind vane (impeller) turns, LCD will instant display wind speed and temperature. When temperature below 0 ℃, wind chill  symbol will shown on the LCD.
7) Push SET to turn off the unit.

Above picture and content just for your reference. Please be subject to the actual products if anything different or updated. Please pardon for not informing in advance.