ADDITIONAL RESOURCES
TABLE OF CONTENTS
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Scientific products such as digital cameras, hand-
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information for our customer service department, in
case you need to reach us.
Additional resources ........................................... 1
About this guide .................................................. 2
Product overview ................................................ 3
Getting started .................................................... 4
Set up.............................................................. 4
Change channel .............................................. 6
Low battery warning ........................................ 6
Reset system ...................................................... 6
Safety and care ................................................... 7
Warnings ............................................................. 7
Troubleshooting .................................................. 8
Specifications ...................................................... 9
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DESCRIPTIONS
PRODUCT OVERVIEW
1. Temperature display
2. LED indicator
1
2
3
4
5
6
3. °C / °F switch
4. Reset button
5. Channel switch
6. Battery compartment
7. Battery compartment lid
8. Wall mount
7
8
3
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SET UP
GETTING STARTED
1. Place remote unit as close as possible to the
main unit.
This product can be used with up to 2 remote units
to transmit outdoor temperature and humidity data
to a main (indoor) unit. The measurement unit (°C
or °F) and channel number (1, 2, or 3) switches are
located in the battery compartment, and should be
set prior to installation.
2. Remove the battery compartment lid. (You will
need a small Phillips screwdriver.)
3. Assign a Channel Number. If
1
2
3
you are using more than one
remote unit, select a different
channel number for each unit.
RESET
CHANNEL
NOTE
Additional remote units sold separately.
4. Set the measurement unit.
5. Insert the batteries. Match
1
2
3
RESET
CHANNEL
the polarity, as shown in the battery
4
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compartment.
•
•
Do not place the remote
unit more than 20 – 30 meters (60 – 90 feet)
from the main (indoor) unit.
6. Press RESET with the point of a blunt object
(such as a ball point pen).
Position the unit so that it faces the main
(indoor) unit. Minimize obstructions such as
doors, walls, and furniture.
7. Replace the battery compartment lid. Secure.
8. Mount the remote unit on a flat surface using
the recess holes on the back of the mounting
unit. Insert the sensor into the mounting unit,and
You may need to experiment with various
locations to get the best reception.
gently push down to secure. For best results:
•
Place the unit out of
direct sunlight and
moisture.
9. Once the batteries are in place, the sensor will
transmit signals every 40 seconds.The readings
shown on the main unit depend on which remote
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sensor (1, 2, or 3) is selected. Refer to the main
unit User Manual for more information.
NOTE
Do not use rechargeable batteries. Properly
dispose used batteries by taking them to an
authorized disposal station.
CHANGE CHANNEL
Repeat the Set Up procedure (ꢀ 4). In Step 3, select
a different Channel Number.
RESET SYSTEM
The RESET button is located in the battery
compartment. Press it with the point of a blunt object
(such as a ball point pen) whenever you change the
batteries, or whenever performance is not behaving
as expected (e.g., unable to establish radio
frequency link with main unit). Refer to the User
Manual for the main unit for more information.
LOW BATTERY WARNING
Replace the batteries whenever the low battery signal
(
) shows on the remote unit, or on the remote unit
area of the main unit.
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electrical shock and damage the unit.
SAFETY AND CARE
•
Do not subject the main unit to extreme force,
shock, or fluctuations in temperature or humidity.
Wash the unit with a slightly damp cloth and mild
detergent. Avoid dropping the unit or placing it in a
high-traffic location.
•
•
Do not tamper with the internal components.
Do not mix new and old batteries or batteries of
different types. Do not use rechargeable batteries
with this product.
Do not expose the unit to direct sunlight since this
may affect the accuracy of measurements.
•
Remove the batteries if storing this product for a
long period of time.
WARNINGS
•
•
Do not scratch the LCD display.
This product is designed to give you years of service
if handled properly. Observe the following guidelines:
Do not make any changes or modifications to
this product. Unauthorized changes may void
your right to use the product.
•
Never immerse the unit in water. This can cause
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•
•
The contents of this user manual are subject to
change without notice.
Problem
Symptom
Remedy
Temp
Main unit
shows
Temperature is
out-of-range.
Images not drawn to scale.
“LLL” or “HHH”
Remote
unit
Cannot
Check batteries
TROUBLESHOOTING
locate main
unit
(ꢀ 6)
Check here before contacting our customer service
department.
Check location
(ꢀ 5)
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Relative humidity
Range
Resolution
SPECIFICATIONS
25% to 95%
1%
Dimensions
L x W x H
105 x 70 x 21 mm
(4.2 x 2.8 x 0.84 inches)
80.5 grams
Frequency
RF frequency
Range
433 MHz
30 meters (98 feet) with no
obstructions
Weight
(without batteries)
Transmission
every 40 seconds
Temperature
Unit
Range
°C or °F
Channel No.
Unit
Power
1, 2, or 3
°C or °F
2 x UM-3 (AA) 1.5V
alkaline batteries
-20 °C to 60 °C
(-4 °F to 140 °F)
0.1 °C (0.2 °F)
Resolution
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FCC :
NOTE ON COMPLIANCE
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.
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 operations.
WARNING Changes or modifications to this unit not expressly
approved by the party responsible for compliance could void the
user’s authority to operate the equipment.
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:
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ꢁ
ꢁ
ꢁ
Reorient or relocate the receiving antenna.
CAUTION
Increase the separation between the equipment and receiver.
— The content of this manual is subject to change without
further notice.
Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
— Due to printing limitation, the displays shown in this
manual may differ from the actual display.
ꢁ
Consult the dealer of an experienced radio/TV technician for help.
— The contents of this manual may not be reproduced
without the permission of the manufacturer.
Company Name : Oregon Scientific, Inc.
Address : 19861 SW 95th Place, Tualatin, Oregon 97062, USA
Telephone Number : 1-800-853-8883
Name and model number of the product : Wireless Remote
Thermo-Hygro Sensor THGR 238 NF
©2003.Oregon Scientific.All rights reserved.
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Wireless Remote Thermo-Hygro Sensor
(Model #: THGR 238 NF)
User Manual
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