User's Manual

Indoor data
Pressure/ temperature : 4 times per minute
Indoor Temperature Range : -14.1ºF to +139.8ºF (shows “OFL” if outside range)
Resolution : 0.2ºF
Measuring Range Rel. Humidity : 20% to 95% (if the relative humidity is less than 20% or greater
than 95%, it will display 19% or 96%)
Resolution : 1%
Relative humidity checking interval : every 30 seconds
Measuring Range Air Pressure : 27.16 inHg to 31.89 inHg
Resolution : 0.01 inHg
Alarm duration : 2 minutes (approx.)
Power consumption
Base Station
Batteries : 3 x AA, IEC LR6, 1.5V (Alkaline recommended)
or AC power : Input 120V AC 60HZ (use the provided AC/DC adapter only)
Thermo-hygro sensor : 2 x AA, IEC LR6, 1.5V (or can draw power from the adaptor if
used)
Dimensions (L x W x H):
Base Station: :
6.7 x 1.4 x 5.5 inches
(6.5ft cable for connection to the PC)
Thermo-hygro sensor :
2.8 x 2.9 x 3.3 inches
(16ft cable for connection to base station)
Rain sensor :
5.5 x 2.7 x 5.4 inches
(plus 32ft cable connects to thermo-hygro sensor)
Wind sensor :
2.4 x 7.8 x 11.5 inches
(plus 32ft cable connects to thermo hygro sensor)
12.0 Operating Range
Under optimum conditions in an open field a range of up to 82ft wireless transmission is possible, i.e. when
there is ‘visual’ contact between the sensors and base station. Walls and reinforced concrete constructions
can be passed through, but they do reduce the operating distance accordingly. A reduced operating range
may be due to the following reasons:
• High frequency interference from other sources.
• Buildings of all types and trees.
• Especially in the case of the wind sensor, metal roofs or roof insulation with foil sealed glass wool can
reduce the range.
• Transmitter and receiver clearance from conductive surfaces or objects that give radiation
characteristic and thus the range
• Neighboring using units operating on the same frequencies may affect the receiver.
• Poorly screened PCs may affect the receiver and reduce the reception ranges
13.0 Understanding Displayed Weather Data
When the transfer of the updated weather information occurs or the user has entered new settings (for
example setting high and low alarms) from the base station to the PC, there may be a very small time delay
until the data is updated to the PC. For this reason new data may not be displayed immediately onto your PC
even though it has been changed on the base station. The base station experiences this same short time
delay when new data settings are entered from the PC before the base station can recognize and shows this
on the LCD.
During the high frequency reception periods from the outdoor sensors to the base station, any data transfer
from the base station to the PC or vice versa will experience a longer time delay due to the mass amounts of
weather information being simultaneously received and transmitted from the sensors to the base station which
is why any data changes made by the user may not register immediately. Time delay of data reception and
transfer is normal so when newly entered data does not immediately register from the base station to the PC
or vice versa it is due to the frequent communication between all the sensors and base station and the PC.
Furthermore, due the constant weather information updating from the sensors to the base station, the data
displayed on the PC may not be the updated information received by the base station since the data may not
have been transferred to the PC yet. Therefore users may experience different sets of data shown on the
base station and the Heavy Weather program until such time the data is updated to the PC. The Heavy