Oregon THR2 8 User Manual

REMOTE THERMO SENSOR

WITH LCD

MODEL : THR28

USER'S MANUAL

E
C

1CF RESET CH 2 3

F

G

1

[ FIG A ] [ FIG B ]

1CF RESET CH 2 3

AA / UM-3 1.5V

AA / UM-3 1.5V

[ FIG C ]

[ FIG D ]

D

1

1CF RESET CH 2 3

AA / UM-3 1.5V

AA / UM-3 1.5V

EN

INTRODUCTION

Congratulations on your purchase of the THR238N Remote Thermo Sensor.
This 433MHz Multi-Channel In-Out Thermometer monitors temperature

changes of outdoor sites. Operation is easy and no wire installation is
required.

COMPATIBLE UNITS

Examples of compatible units are as follows:
EMR812HG EMR899HG WMR918

MAIN FEATURES

A LCD

Displays the current temperature monitored by the remote unit

B LED INDICATOR

Flashes when the remote unit transmits a reading

°C/°F SLIDE SWITCH

C

Selects between Centigrade (°C) and Fahrenheit (°F)

D CHANNEL SLIDE SWITCH

Designates the remote unit Channel 1, Channel 2 or Channel 3

ERESET BUTTON

Returns all settings to default values

FBATTERY COMPARTMENT

Accommodates two UM-3 or AA size alkaline batteries

GBATTERY DOOR

HWALL-MOUNT HOLDER

Supports the remote unit in wall-mounting

IREMOVABLE TABLE STAND

For standing the remote unit on a flat surface

GETTING STARTED

Note: To ensure proper reception between the main unit and the remote

sensor, follow the instructions carefully.

BATTERY AND CHANNEL INSTALLATION

1. Place both units as close as possible to each other.

2. Assign a different channel to each remote sensor by changing the
channel switch in the battery compartment of the remote sensor. [FIG A]

3. Select the units of measurement for the temperature display on the °C/
°F slide switch. [FIG B]

4. Install 2 alkaline batteries (UM-3 or "AA" size 1.5V) strictly according to
the polarities shown. [FIG C]

5. Insert batteries or press the reset button of the main unit. Follow the
instructions as set out in the user's manual.

6. Position the remote sensor and main unit within effective transmission
range, which in usual circumstances, is 30 meters.

Note: The effective range may be limited by building materials and the
position of either the main unit or remote sensors. Try various set-up
arrangements for best result.

Though the sensor is weatherproof, and is meant for use outside, it should
be placed away from direct sunlight, rain, or snow.

CHANGING CHANNELS

Once a channel is assigned to a unit, you can only change it by removing
the batteries and repeating the above procedure.

LOW-BATTERY WARNING

A battery-low indicator [ ] will activate on the sensor to indicate that the
batteries are low and require changing. Low batteries for a given sensor will
also be indicated on the main unit. Replace the batteries when the low­battery indicator appears.

Note: Disposed of improperly, batteries can beharmful. Protect the
environment by taking exhausted batteries to authorized disposal
stations.

OPERATION

Once batteries are in place, the sensor will start transmitting samplings at
40-second intervals.

The remote sensor reading shown on the LCD depends on which remote
sensor channel has been chosen.

HOW TO RESET THE UNIT

The reset function is required only when the unit is operating in an unfavorable
way or malfunctioning.

To access:

1. Lift open the battery compartment door.

2. Place a blunt stylus into the hole marked RESET and press.

3. Replace the battery compartment door.

See the user's manual of your main unit for further information.

HOW TO USE THE TABLE STAND OR WALL MOUNT

This sensor comes with a wall-mount holder and a removable stand. Use
either to hold the unit in place. [ FIG D]

PRECAUTIONS

This product is engineered to give you years of satisfactory service if you
handle it carefully. Here are a few precautions:

1. Do not immerse the unit in water.

2. Do not clean the unit with abrasive or corrosive materials. They may

scratch the plastic parts and corrode the electronic circuit.

3. Do not subject the unit to excessive force, shock, dust, temperature or
humidity, which may result in malfunction, shorter electronic life span,
damaged battery and distorted parts.

4. Do not tamper with the unit’s internal components. Doing so will
invalidate the warranty on the unit and may cause unnecessary damage.
The unit contains no user-serviceable parts.

5. Only use fresh batteries as specified in the user’s manual. Do not mix
new and old batteries as the old ones may leak.

6. Always read the user’s manual thoroughly before operating the unit.

SPECIFICATIONS

Temperature Measurement

Proposed operating range : -30.0°C to +60.0°C (-22.0°F to 140.0°F)
Temperature resolution : 0.1°C (0.2°F)
RF transmission frequency : 433 MHz
No. of remote unit : maximum of 3
RF transmission range : maximum 30 meters
Temperature sensing cycle : around 40 seconds

Power : use 2 pcs UM-3 “AA” 1.5V alkaline battery
Weight : 80.5 gm (without batteries)
Dimension : 105 x 70 x 21 mm (H x W x D)

CAUTION

- The content of this manual is subject to change without further notice.

-Due to printing limitation, the displays shown in this manual may differ

from the actual display.

- The manufacturer and its suppliers hold no responsibility to you or any

other person for any damage expenses, lost profits, or any other claim
that may arise from using this product.

- The contents of this manual may not be reproduced without the

permission of the manufacturer.

ABOUT OREGON SCIENTIFIC

Visit our website (www.oregonscientific.com) to learn more about Oregon
Scientific products such as digital cameras; MP3 players; children’s elec­tronic learning products and games; projection clocks; health and fitness
gear; weather stations; and digital and conference phones. The website
also includes contact information for our Customer Care department in case
you need to reach us, as well as frequently asked questions and customer
downloads.

We hope you will find all the information you need on our website, however
if you’re in the US and would like to contact the Oregon Scientific Customer
Care department directly, please visit:

www2.oregonscientific.com/service/support

OR

Call 1-800-853-8883.

For international enquiries, please visit:
www2.oregonscientific.com/about/international

FCC STATEMENT

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.

WARNING Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.

NOTE This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation.

This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following
measures:

•Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to

which the receiver is connected.

•Consult the dealer or an experienced radio / TV technician for help.

DECLARATION OF CONFORMITY

The following information is not to be used as contact for support or sales.
Please call our customer service number (listed on our website at
www.oregonscientific.com), or on the warranty card for this product for all
inquiries instead.

We

Name: Oregon Scientific, Inc.
Address: 19861 SW 95th Ave., Tualatin,

Telephone No.: 1-800-853-8883

Oregon 97062 USA