4
Boulder, Colorado. A team of atomic physicists continually measure every
second of every day to an accuracy of ten billionths of a second a day. These
physicists have created an international standard, measuring a second as
9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. For more
information about WWVB please see the NIST website at
http://www.boulder.nist.gov/timefreq/stations/wwvb.htm
QUICK SET-UP GUIDE
Hint: Use good quality Alkaline Batteries and avoid rechargeable batteries.
1.
Have the Wireless Weather Station and remote thermo/hygro sensor 3 to 5 feet
apart.
2.
Batteries should be out of both units for 10 minutes.
3.
Place the batteries into the
remote thermo/hygro sensor
first then into the
Wireless Weather Station.
(All remote thermo/hygro sensors must be started before the Wireless Weather
Station)
4.
DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.
In this time the Wireless Weather Station and remote thermo/hygro sensor will start to talk
to each other and the display will show both the indoor temperature/humidity and an
outdoor temperature/humidity. If the Wireless Weather Station does not display both
temperatures after the 15 minutes please retry the set up as stated above. After both
indoor and outdoor temperatures and humidity are displayed for 15 minutes you can place
your remote thermo/hygro sensor outdoor and set your time.
The remote thermo-hygro sensor should be placed in a dry, shaded area. The thermo-
hygro sensor has a range of 330 feet. Keep in mind that the 330 feet is in open air with no
obstructions and that radio waves DO NOT curve around objects. Actual transmission
range will vary depending on what is in the path of the signal. Each obstruction (roof, walls,
floors, ceilings, thick trees, etc.) will effectively cut signal range in half.
Example
: A Wireless Weather Station with a 330 feet range is mounted on an interior wall,
so that the signal has to pass through one interior wall, one exterior wall, and across the 10
feet width of the room between the 2 walls. The first wall will reduce the range to 165 feet,
and the second wall will reduce the range to 87 feet. Factoring in the 10 foot room, this
leaves a maximum of 77 feet of remaining signal range.
This allowance is typically enough for a frame wall with non-metallic siding; however certain
materials can reduce range even further. Metal siding, stucco, and some types of glass
can reduce signal range by as much as ¾ or more, compared to the ½ reduction typical of
most obstructions. It is possible to receive a signal through these materials, however
maximum range will be much less due to their tendency to absorb or reflect a much larger
portion of the sensor’s signal.
DETAILED SET-UP GUIDE
Battery Installation
I.
BATTERY INSTALLATION (When on thermo/hygro sensor is being used)
1.
First, insert the batteries to the thermo/hygro sensor (see “
A. Remote
Thermo/hygro Sensor
” below).
2.
Within 2 minutes of powering up the sensor, insert the batteries to the Weather
Station (see “
B. Wireless Weather Station
” below). Once the batteries are in
