Alarm Mode - DAVIS Vantage Pro2 Plus User Manual

Alarm Mode

Pressing the < key displays the previous day's highs. Each time you press the <
key, the date moves back another day. The 24 dots in the graph field also
represent each of the last 24 days, months, or years; the right-most dot is the
present. As you move backward and forward the flashing dot changes to show
what value you're looking at.
4. Use the console keys to select a different weather variable.
The console's time displays time of the selected variable's high or low.
5. Press DONE to exit the Highs and Lows mode. The console screen switches to
the Current Weather mode.
Alarm Mode
The Vantage Pro2 features more than 30 alarms that can be programmed to sound
whenever a reading exceeds or drops below a set value. With the exception of
barometric pressure and time, all alarms sound when a reading reaches the alarm
threshold. For example, if the high outside temperature alarm is set at 65º F, the
alarm sounds when the temperature rises to 65.0º F.
When an alarm condition exists, the audible alarm sounds, the alarm icon blinks
repeatedly, and an alarm description appears in the ticker at the bottom of the
screen. The alarm sounds for a maximum of two minutes if the console is battery-
powered, but the icon continues to blink and the message stays in the ticker until
you clear the alarm or the condition clears. If you're using the AC adapter, the
alarm will continue sounding as long as the condition exists.
The alarm will sound again for each new alarm. If more than one alarm is active,
the description for each active alarm cycles onto the screen every four seconds. A
"+" symbol appears at the end of the alarm text if more than one alarm is tripped.
Low alarms work the same way. For example, if the wind chill threshold is set for
30ºF, the alarm condition begins when the wind chill drops to 30º and will continue
until the wind chill rises above 30º.
Four Special Alarms
ET (Evapotranspiration)
ET is updated only once an hour, on the hour. If during a given hour the ET Value
exceeds the alarm threshold, the ET alarm sounds at the end of that hour. This is
true for daily, monthly, and yearly ET alarms. You must have the optional Solar
Radiation Sensor to use this alarm. See "Evapotranspiration (ET)" on page 48. for
a description of this variable.
Barometric Pressure
The Vantage Pro2 allows you to set two barometric pressure alarms: a "rise" alarm
and a "fall" alarm. You may select any rate of change per three hours between 0.00
and 0.25 inches (6.35 mm) Hg, (8.5 mb, hPa); the alarm will sound if the rate of
change (in either direction) exceeds the threshold you set. This alarm is updated
every 15 minutes.
Time
The time alarm is a standard "alarm clock" alarm. It sounds for one minute at the
set time. Make sure you choose AM or PM, if you're in 12-hour mode.
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