La Crosse Technology WS1506 Instruction Manual page 26

Default alarm values:
Low
Temperature
High
Relative Low
Humidity High
Wind speed High
HIGH AND LOW OUTDOOR TEMPERATURE ALARM SETTING
Note:
The High and Low outdoor temperature alarm can be set On/ Off independently,
according to your needs.
Set the Outdoor temperature alarm value (High or Low alarm value) :
1. In the normal display mode, press the ALARM key twice. The High Outdoor
Temperature alarm display will be shown.
High alarm icon
Alarm-On icon
2. Press and hold the SET key for about 2 seconds. The temperature digit will
start flashing. Press the + or MIN/MAX key to set the high outdoor temp alarm
value. (Keep holding the key will allow the value to increase faster.)
0°C
40°C
45%
70%
100 km/h
89