Operation Manual

example, if the high temperature alarm is set to +25°C and the

current 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 blinking, but no alarm will be activated.

It has to drop to below +24°C (with a pre-set hysteresis of

1°C) so that the alarm can be produced again. Hysteresis

values for the various weather data types are given in the

following table:

Weather data Hysteresis

Temperature 1°C

Humidity 3% RH

Air pressure 1 hPa

Rainfall 24h 5.0mm

Rainfall 1h 0.5mm

Wind 10 km/h

16. Auto memory for stored values

The base station has a memory back up system, which is

used to memorize user-defined settings for when the batteries

are changed or if a power failure occurs. User defined units

are automatically updated each time these are changed. The

base station will memorize the following user defined units:

• Time zone

• 12/24h time display mode

• Unit settings (temperature, pressure, rainfall, wind)

• Air pressure offset for calculation of relative air pressure

• Weather picture threshold

• Storm warning threshold

• LCD contrast

• Alarm time

• Weather Alarm thresholds

• State of alarms (enabled/disabled)

• Rainfall total value and reset time/date