La Crosse Technology TX4 User Manual

TX4U Outdoor Temperature/Humidity SensorTX4U Outdoor Temperature/Humidity Sensor

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The TX4U outdoor temperature/humidity sensor can be
added to your existing units in operation. The outdoor
temperature/humidity sensor measures the outdoor
temperature and humidity (or any other location you wish
to know the temperature and humidity) and transmits the
data to the indoor display station.

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Rain
Protector

INVENTORY OF CONTENTS

1. Outdoor temperature/humidity sensor

2. Mounting bracket.

3. Rain protector

4. Two each, ½” Philips mounting screws.

5. One strip double sided adhesive tape.

6. Instruction manual and warranty return card.

ADDITIONAL EQUIPMENT (not included)

1. One Philips screwdriver.

2. One Flat screwdriver.

3. Two fresh AA 1.5V batteries.

I. SETTING UP

Before you begin, assign a number to each outdoor
temperature/humidity sensor (i.e. #1 for outdoors, #2 for
the basement, etc.) if you have multiple sensors. This will
help you determine which temperature, from which
outdoor temperature/humidity sensor, you are reading on
the indoor display station.

Note:

Remove batteries from all existing units in
operation—including outdoor temperature/humidity
sensor units and indoor display stations. When setting up
multiple units it is important to insert batteries first into all
the outdoor temperature/humidity sensors, and in numeric
sequence. Second install batteries into the indoor
display station. Transmission problems will arise if this is

Outdoor
temperature/humidity
senso

Mounting
Bracket

Complete
TX4U

not done correctly and if the total time for setup exceeds
6 minutes.

A. BATTERY INSTALLATION

Follow these directions when first setting up,
when replacing batteries, or for resetting
purposes.

1. Remove the batteries from all existing units
in operation.

2. Remove the battery covers to all outdoor
temperature/humidity sensors. Simply slide
the battery cover down to remove.

3. Place outdoor temperature/humidity sensors
in sequential order.

Battery
compartment

Battery cover

Note:

Outdoor temperature/humidity sensors
will not usually read the same temperature. This
is due to variants such as drafts and handling.
This is normal.

1. Observe the correct polarity and install 2 AA

alkaline batteries in each unit in sequential
order. The batteries will fit tightly—make
sure they do not spring free. This may
cause start-up problems.

2. Replace the battery cover, rain protector,

and mounting brackets.

3. Observing the correct polarity, install

batteries into the indoor display station
(refer to the indoor display station’s
manual). Replace battery cover.

4. Wait 5-6 minutes or until both indoor and

outdoor temperature and humidity are
shown on the LCD of the indoor display
station.

5. Refer to indoor display station’s instruction

manual for more specific details.

II. MOUNTING

Note:

The sending range of the outdoor
temperature/humidity sensor is 80 ft. However,
obstacles such as walls, concrete, and large
metal objects can reduce the range. Before
permanently mounting, place units in their
desired location to see if a reading is obtained.
There should be a change of temperature in the
OUTDOOR LCD within 6 minutes. If the indoor
display station loses the signal from the outdoor
temperature/humidity sensor, it will display the
last temperature reading for 15 minutes. After
15 minutes of not receiving any signals the
OUTDOOR LCD of the indoor display station will
display “- -. –”.

The outdoor temperature/humidity sensor can be
mounted in two ways:

A. MOUNTING WITH THE SCREWS

B. MOUNTING WITH ADHESIVE TAPE

• with the use of screws or,

• using the adhesive tape.

1. Remove the mounting bracket from
the outdoor temperature/humidity
sensor.

2. Place mounting bracket over
desired location. Through the 3
screw holes of the bracket, mark
the mounting surface with a pencil.

3. Where marked, drill holes into
mounting surface using an
appropriate size drill bit.

4. Screw mounting bracket onto the
mounting surface. Ensure that the
screws are flush with the bracket.

5. Snap the outdoor
temperature/humidity sensor into
place on the mounting bracket.

1. With a nonabrasive solution, clean
and dry the back of the mounting
bracket and the mounting surface
to ensure a secure hold. The
mounting surface should be
smooth and flat.

2. Remove the protective strip from
one side of the tape. Press firmly
into the designated area on the
back of the mounting bracket.

3. Remove the protective strip from
the other side of the tape, and
position the outdoor
temperature/humidity sensor in
the desired location.

III. MAINTENANCE AND CARE

1. Extreme temperatures, vibrations, and shock
should be avoided to prevent damage to the
units

2. Clean displays and units with a soft, damp cloth.
Do not use solvents or scouring agents, they
may mark the displays and casings

3. Do not submerge in water.

4. Do not subject the units to unnecessary heat or
cold by placing them in the oven or freezer.

5. Opening the casings invalidates the warranty.
Do not try to repair the unit. Contact La Crosse
Technology for repairs.

IV. SPECIFICATIONS

Temperature measuring
range

Relative Humidity
measuring range

Transmission interval Every 10 seconds in first 3

Transmission frequency 433.92 MHz
Transmission range 80 feet (25m)
Power source 2 x 1.5V AA Battery

Dimensions 4.33” x 1.57” x 0.78”

V. LIABILITY DISCLAIMER

1. The manufacturer and supplier cannot accept
any responsibility for any incorrect readings and

-21.8ºF to 157.2ºF with

0.1ºF resolution
(-29.9°C to 69.9°C)
20% to 99% (“—“
displayed when outside
this range)

minutes
Every 1 minute thereafter

Alkaline recommended

(110 x 40 x 20mm)
Rain Protector

2.25”Ø x 4.75” high
(57mm∅ x 120mm high)

any consequences occurring should an
inaccurate reading take place.

2. This product is not to be used for medical
purposes or for public information.

3. The specifications of this product may change
without prior notice

4. This product is not a toy. Keep out of children’s
reach.

5. No part of this manual may be reproduced
without written consent of the manufacturer.

CONTACT INFORMATION

La Crosse Technology Phone [phone]
1116 South Oak Street Fax [phone]
La Crescent, MN 55947

e-mail

[e-mail]

Web

www.lacrossetechnology.com

VI. FCC DISCLAIMER

This device complies with part 15 of the FCC rules.
Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2)
this device must accept any interference received,
including interference that may cause undesired
operation.

Freq. 433.92 MHz

La Crosse Technology

Made in China

TX4UP

V2