La Crosse Technology WS1506 Instruction Manual page 29

WIND SPEED ALARM SETTING
The High wind speed alarm can be set by following the steps below.
1. In the normal display mode, press the ALARM key six times. The High wind
speed alarm display will be shown.
2. Press and hold the SET key for about 2 seconds. The wind speed digit will start
flashing. Press the + or MIN/MAX key to set the high wind speed alarm value.
3. Press the ALARM key to confirm the setting. The digit will stop flashing. Press
the SET key to switch on or off the alarm. (The showing of the icon ((( ))) means
that the alarm is switched on.)
4. Press the ALARM key once to return to the normal display mode.
In case the wind speed exceeds the condition for high wind speed alarm, the value
will be flashing, along with the corresponding high alarm icon ("HI AL"). And the
buzzer will ring for 2 minutes. User may press any key to stop the sound.
HYSTERESIS
To compensate for fluctuation of the measured data, which may cause the weather
alarm to sound constantly if the measured reading is close to your set level, a
hysteresis function has been implemented for each weather alarm. For example, if the
high temperature alarm is set to +25° C and the curr ent value moves to +25°C, the
alarm will be activated (if it has been enabled). Now when the temperature drops to
+24.9° C or below and thereafter again increases to beyond +25° C, the data will be
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