TX28U -Wireless 915 MHz Thermo-Hygro Sensor
The TX-28U Thermo-Hygro Sensor measures the outdoor temperature and humidity and transfers the data to the weather station.
Outdoor Thermo-hygro Sensor
•
Remote transmission of outdoor temperature and humidity to weather station by 915 MHz
•
Displays alternately the measured temperature and humidity readings on LCD
•
Water-resistant
proof
casing
•
Wall
mounting
case
•
Mounting at a sheltered place. Avoid direct rain and sunshine
INVENTORY OF CONTENTS
1.
One TX28U Thermo-Hygro Sensor
2. Mounting
hardware
3.
Instruction manual and warranty card.
ADDITIONAL EQUIPMENT (not included)
•
Two fresh AA, IEC LR6, 1.5V Alkaline batteries.
Important Notes on Set-up and Operation
•
The Thermo-Hygro Sensor should be placed in a dry, shaded area. Avoid direct sun, as this will cause incorrect readings.
•
Fog and mist will not harm your Thermo-Hygro Sensor, but direct rain must be avoided.
•
The Thermo-Hygro Sensor has a range of 330 feet (100 m). 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 (100 m) 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 (3 m) width of the room between the 2 walls. The first wall will
reduce the range to 165 feet (50 m), and the second wall will reduce the range to 87 feet (26.5 m). Factoring in the 10 foot room,
this leaves a maximum of 77 feet (23.5 m) 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.
•
The Thermo-Hygro Sensor transmits a signal about every 4 seconds. After the batteries have been installed, the weather
station will search for the signal for the duration of few minutes. If there is no temperature reading in the OUTDOOR LCD after
5 minutes, user shall make sure the units are within range of each other, or repeat the battery installation procedure.
•
If a button is pressed before weather station receives the signal from the Thermo-Hygro Sensor, you will need to follow the
battery installation procedure again.
SETTING UP:
When one sensor is to be used
1.
First, insert the batteries to the Sensor (see “
Install and replace batteries in the Thermo-Hygro Sensor
”
below).
2.
Within 2 minutes of powering up the Sensor, insert the batteries to the weather station. Once the batteries are in place, all
segments of the LCD will light up briefly. Following the indoor temperature and the time as 12:00 will be displayed. If they are
not shown in LCD after 60 seconds, remove the batteries and wait for at least 60 seconds before reinserting them. Once the
indoor data is displayed user may proceed to the next step.
3.
After the batteries are inserted, the weather station will start receiving data signal from the Sensor. The outdoor temperature
and humidity should then be displayed on the weather station. If this does not happen after 2 minutes, the batteries will need
to be removed from both units and reset from step 1.
4.
In order to ensure sufficient 915 MHz transmission however, this should under good conditions be a distance no more than
330 feet (100 meters) between the final position of the weather station and the Sensor (see notes on “Positioning” and “915
MHz Reception”).
When more than one sensor is to be used
1.
User shall remove all the batteries from the weather station and Sensors and wait 60 seconds if setting has been done with
one Sensor before.
2.
Insert the batteries to the first sensor.
3.
Within 2 minutes of powering up the first Sensor, insert the batteries to the weather station. Once the batteries are in place,
all segments of the LCD will light up briefly. Following the indoor temperature and the time as 12:00 will be displayed. If they
are not shown in LCD after 60 seconds, remove the batteries and wait for at least 60 seconds before reinserting them.
4.
The outdoor temperature and humidity from the first Sensor (channel 1) should then be displayed on the weather station.
Also, the signal reception icon will be displayed. If this does not happen after 2 minutes, the batteries will need to be
removed from both units and reset from step 1.
5.
Insert the batteries to the second sensor as soon as the outdoor temperature and humidity readings from
the first Sensor are displayed on the weather station.
Note:
User shall insert the batteries into the second Sensor within 45 seconds of reception of the first Sensor.
6.
The outdoor temperature and humidity from the second Sensor and the "channel 2" icon should then be
displayed on the weather station. If this does not happen after 2 minute, the batteries will need to be
removed from all the units and reset from step 1.
7.
Insert the batteries to the third Sensor as soon as the "channel 2" icon and outdoor data are displayed on
the weather station. Then within 2 minutes, the channel 3 outdoor data from the third Sensor will be
displayed and the channel icon will shift back to "1" once the third Sensor is successfully received. If this is
not happen, user shall restart the setting up from step 1.
Note:
User shall insert the batteries into the third Sensor within 45 seconds of reception of the second Sensor.
8.
In order to ensure sufficient 915 MHz transmission however, this should under good conditions be a distance no more than
100 meters between the final position of the weather station and the Sensor (see notes on “
Positioning
” and “
915 MHz
Reception
”).
INSTALL AND REPLACE BATTERIES IN THE OUTDOOR THERMO-HYGRO SENSOR
The outdoor Thermo-Hygro Sensor uses 2 x AA IEC LR6, 1.5V Alkaline batteries. To install and replace the batteries, please follow
the steps below:
1.
Remove the battery cover with a small screwdriver.
2.
Insert the batteries, observing the correct polarity (see battery compartment marking).
3.
Replace the battery cover on the unit.
Note:
•
In the event of changing batteries in any of the units, all units need to be reset by following the
setting up procedures. This is because a random security code is assigned by the Sensor at
start-up and this code must be received and stored by the weather station when setting up.
•
Detailed Set up procedures refer to the Instruction Manual of the WS-9020U.
915MHZ SIGNAL RECEPTION
If the outdoor data is not received within three minutes after setting up, the display will show for example , “- - - °F” on the outdoor
temperature section of the receiver, please check the following points:
1.
Distance sensors at least 2 meters away from any interfering sources such as computer monitors or TV sets.
2.
Avoid placing the Thermo-Hygro Sensor onto or in the immediate proximity of metal window frames.
3.
Using other electrical products such as headphones or speakers operating on the 915MHz frequency may prevent reception
of the transmitted data. Interference can also be caused by neighbors using similar electrical devices.
POSITIONING THE THERMO-HYGRO SENSOR
Battery
compartment
Battery
cover
