La Crosse Technology Family Weather Station Instruction Manual page 41

9. Maximum wind speed
MAX icon
RESET THE MAXIMUM AND MINIMUM WEATHER DATA
To reset the aforementioned maximum or minimum weather data 1. to 9., you shall
need to reset each of the data independently.
1. Press MIN/MAX key to show the desired weather data. For instance, if you want
to reset the minimum humidity, in the normal display you shall press the
MIN/MAX key three times to show the min humidity value.
2. Press and hold the SET key for about 2 seconds, then the "RESET" icon will
appear at the bottom part of the LCD.
Time and date
or recording
MAX wind
speed value
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