La Crosse Technology WS1506 Instruction Manual page 28

2. Press and hold the SET key for about 2 seconds. The humidity digit will start
flashing. Press the + or MIN/MAX key to set the high outdoor humidity 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. The Low Outdoor humidity alarm display will be
shown.
5. Press and hold the SET key for about 2 seconds. The humidity digit will start
flashing. Press the + or MIN/MAX key to set the low outdoor humidity alarm
value.
6. 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.)
7. Press the HISTORY key or wait for about 30 seconds and the display will return
to normal display mode automatically.
In case the humidity value meets the condition for high alarm or low alarm, the value
will be blinking, along with the corresponding icon ("HI AL"/ "LO AL"). And the buzzer
will ring for 2 minutes. User may press any key to stop the sound.
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