User's Manual

To compare pressure conditions from one location to another, meteorologists correct pressure to

sea-level conditions. Because the air pressure decreases as you rise in altitude, the sea-level

corrected pressure (the pressure your location would be at if located at sea-level) is generally

higher than your measured pressure.

Thus, your absolute pressure may read 28.62 inHg (969 mb) at an altitude of 1000 feet (305 m),

but the relative pressure is 30.00 inHg (1016 mb).

The standard sea-level pressure is 29.92 in Hg (1013.2hpa). This is the average sea-level pressure

around the world. Relative pressure measurements greater than 29.92 inHg (1013.2hpa) are

considered high pressure and relative pressure measurements less than 29.92 inHg are considered

low pressure.

To determine the relative pressure for your location, locate an official reporting station near you

(the internet is the best source for real time barometer conditions, such as Weather.com or

Wunderground.com), and set your weather station to match the official reporting station.

8 Alarm Mode

The WS-12 includes the following alarms:

• Time

• Indoor Temperature

• Indoor Humidity

• Channel 1 Temperature

• Channel 1 Humidity

• Channel 1 Feels Like Temperature

• Channel 1 Dew Point

• Wind Speed

• Wind Gust

• Hourly Rainfall

• 24 Hour Rainfall

• Absolute Pressure

• Relative Pressure

Channels 2-8 alarms are not supported.

8.1 AlarmOperation

When an alarm condition is exceeded, the alarm icon will flash (visual) and the alarm beeper

will sound (audible). To silence the beeper, press any key. The alarm beeper can be permanently

silenced by referencing Section 8.4.