2.Press and hold the SET key for about 2 seconds, then the "RESET" icon will appear at the bottom part of the LCD.
3.Press the + key once, then the stored value will be reset to the current value and current time.
4.Press the ALARM key to return to normal display mode.
10.Total rainfall amount
The total rainfall measurement is displayed in the fourth section of the LCD, in the unit of mm or inch. It shows the total rainfall accumulated since last reset of the Weather Center.
In normal display mode, press the MIN/MAX key 10 times to show the total rainfall value. The "RESET" icon will also be shown at the same time.
The total rainfall value is counted 
from this time and date
Total rainfall 
value
45
