Oregon Scientific JTR-168LR User manual

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Deluxe In/Out Remote Thermometer
with Trend Chart
MODEL: JTR-168LR
USER'S MANUAL
INTRODUCTION
Congratulations on your purchase of the JTR-168LR Deluxe In/
Out Remote Thermometer.
The basic package comes with a main unit (the temperature
station) and a remote unit (the thermo sensor). The main unit can
support up to three remote units.
The JTR-168LR is easy to use. The main unit has a large display
for the outdoor temperatures, temperature variance for the last 12
hours and the indoor temperatures.
Additional features include ice warning and maximum/ minimum
temperatures for indoors and outdoors.
No wire installation is required between the main unit and the
remote units. As the JTR-168LR operates at 433MHz, it can be
used in the U.S. and most places in Continental Europe.

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MAIN FEATURES A. OUTDOOR TEMPERATURE
Displays current temperature of remote sensor unit.
B. TEMPERATURE TREND CHART
Outdoor CHANNEL 1 temperature variance display, last 12
hours.
C. INDOOR TEMPERATURE
Shows the collected indoors temperature
D. ICE WARNING ICON
Lights up when the ice warning function is active
E. CHANNEL BUTTON
Sets the remote sensor channel .
F. MEMORY BUTTON
Toggles between current, maximum and minimum tempera-
tures
G. CLEAR BUTTON
Erases memory data
H. RESET BUTTON
Returns all settings to default values
I. ICE WARNING SLIDE SWITCH [AL ON/OFF]
Turns on or off the ice warning function
J. °C/°F SLIDE SWITCH
Selects between degrees Centigrade (°C) and Fahrenheit (°F)
K. BATTERY COMPARTMENT
Accommodates two UM-3 or AA-size batteries
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L. ANTENNA
Receives radio signal from remote unit
M. TABLE STAND
For standing the main unit on a flat surface
N. WALL-MOUNT RECESSED HOLE
For mounting the main unit on a wall
O. LOW BATTERY INDICATOR
- Appears on the 1st Line indicates the battery power of the
remote sensor in display is low
- Appears on the 3rd Line indicates the battery power of the
main unit is low
MAIN FEATURES: REMOTE UNIT
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A. LCD DISPLAY
Displays the current temperature monitored by the remote unit
B. LED INDICATOR
Flashes when the remote unit transmits a reading
C. °C/°F SLIDE SWITCH
Selects between degrees Centigrade (°C) and Fahrenheit (°F)
D. CHANNEL SLIDE SWITCH
Designates the remote unit Channel 1, Channel 2 or
Channel 3
E. RESET BUTTON
Returns all settings to default values
F. BATTERY COMPARTMENT
Accommodates two UM-4 or AAA-size batteries
G. WALL-MOUNT HOLDER
Supports the remote unit in wall-mounting
H. REMOVABLE TABLE STAND
For standing the remote unit on a flat surface
I. LOW BATTERY INDICATOR
Lights up when the battery power is low

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HINTS FOR BEST OPERATION
• Assign different channels to different remote units.
• Insert batteries for remote units before doing so for the main
unit.
• Set the main unit and the remote thermo-sensor unit within an
effective range of 100 meters.
• The effective range is vastly affected by the building materials
and how the units are positioned. Try different set-ups for best
results.
• Thoughtheremoteunitsareweatherproof, theyshould be placed
away from direct sunlight, rain or snow.
BATTERY AND CHANNEL
INSTALLATION: REMOTE UNIT
1. Remove the screws on the battery compartment.
2. Select the channel number on the CHANNEL slide switch.
3. Select the temperature display unit on the °C/°Fslide switch.
4. Insert two UM-4 “AAA” sized batteries.
5. Replace the battery compartment door and secure its screws.
Replace the batteries when the low-battery indicator of the par-
ticular channel lights up on the main unit.
Note that once a channel is assigned to a unit, you can only change
it by removing the batteries and repeating the above procedure.
BATTERY INSTALLATION: MAIN UNIT
1. Slide open the battey compartment door.
2. Insert two UM-3 AA-sized batteries.

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3. Replace the battery compartment door.
4. Flip open the table stand and press the [RESET] button with a
bluntstylus. It ensureseasier synchronization betweenthe trans-
mission and reception of signals.
Replace the batteries when the indicator []of the indoor tem-
perature lights up.
GETTING STARTED
Once batteries are in place for the remote units, they will start trans-
mitting samplings roughly at 30-second intervals.
The main unit will also start receiving once batteries are installed.
The temperature of the selected channel will be displayed on the
top line and the indoor temperature on the bottom line. The main
unit will automatically update its readings at 30-second intervals.
The temperature variance for the last 12 hours is automatically
scanned on the trend chart.
If no signals are received, blanks will be displayed. Press
[CHANNEL]and [MEMORY] simultaneously to enforce another
search. This is useful in synchronizing the transmission and recep-
tion of the remote and main units.
Repeatthisstep whenever you finddiscrepancies between the read-
ing shown on the main unit and that on the respective remote unit.
HOW TO CHECK REMOTE AND
INDOOR TEMPERATURES
The indoor temperature is shown on the bottom line of the display.
Temperature readings, receivedfrom aremotesensor,are displayed
on the top line of the unit.
Press [CHANNEL] to change from one channel to the next.

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If more than one remote sensor is being used, the unit can auto-
matically scan all three of the outdoor channels.
To use the automatic outdoor channel scanner function:
Press and hold [CHANNEL] for about 2 seconds. The unit will
begin a cycle of continuously rotating through the three channels.
Temperature readings from each site will be displayed for approxi-
mately 5 seconds.
To stop the automatic scanning function,press[CHANNEL]again.
The scanning cycles will stop.
The kinetic wave display on the channel icon indicates the status
of reception.
If no readings are received from one particular channel for more
than two minutes, blanks will be displayed until further readings
are successfully searched. Check the remote unit is sound and
secure. You can wait for a little while or press [CHANNEL] and
[MEMORY] simultaneously to enforce an immediate search. Of
course no reading will be shown if no remote unit is assigned to
that channel.
The JTR-168LR is capable of measuring temperatures within the
-50°C (-58°F) and +70°C (+158°F) range. If the temperature goes
above or below that, the display will show "HHH" or "LLL".
MAXIMUM AND MINIMUM
TEMPERATURES
The maximum and minimum recorded indoor temperatures and
those of each channel will be automatically stored in memory. To
display them,
1. Press [CHANNEL] to locate the desired channel.
2. Press [MEMORY] to rotate through the maximum [MAX],
minimum [MIN] and current temperatures. The readings of the
indoor temperatures will also be displayed.
To clear the memory of a particular channel
1. Press [CHANNEL] to locate the desired channel.
2. Press [CLEAR], the MAX and MIN memory for that channel
will be erased. Note it will also erase the memory for the indoor
temperatures. If you press [MEMORY]now, the maximum and
minimum temperatures will have the same values as the current
ones until different readings are recorded.
DISCONNECTED SIGNALS
If without obvious reasons the display for a particular channel goes
blank, press [CHANNEL] and [MEMORY] to enforce an imme-
diate search. If that fails, check if the remote unit of that channel is
still in place. Make sure the transmission is within range and path
is clear of obstacles and interference.
The unit is in searching mode.
Temperature readings are
securely registered.
No signals.

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HOW TO READ THE TEMPERATURE
TREND CHART
The temperature variance for CHANNEL 1 for the past 12 hours
is automatically scanned on the screen in six equal columns.
The variance is represented in rows of degrees C above or below
the current temperature at 0 Hr (current time) and 0°C (no vari-
ance).
HOW TO USE THE ICE WARNING
The ice warning is selected on the ICE WARNING slide switch
on the main unit. The warning only applies to CHANNEL 1.
To activate the warning, slide the switch to ON. When the tem-
perature recorded at CHANNEL 1 falls to between -2°C (28.4°F)
to +3°C (37.4°F) a beeping alarm will sound; the ice warning icon
[ ] and current outdoor temperature will flash. The alarm will
sound every minute so long as the recorded temperature is within
alarm range. To stop the alarm, press any key or change the chan-
nel. Display features will continue to flash as a reminder that the
temperature remains within the ice warning range.
To deactivate the ice warning function, slide the ICE WARNING
switch to OFF.
NOTE ON °C AND °F
Theunit of temperature displayis selected onthe°C/°Fslide switch.
Select °C for Centigrade or °F for Fahrenheit.
Note that the remote temperature display on the main unit is domi-
nated by the selection on the °C/°F slide switch of the main unit.
Whatever the display units of the remote sensors are, they will be
automatically converted to the chosen one of the main unit.
LOW BATTERY WARNING
When it is time to replace batteries, the respective [ ] indicator
will show up when the corresponding channel is selected. The
battery level of the main unit will be shown on the indoor tempera-
ture when it is running low.
HOW TO USE THE TABLE STAND OR
WALL MOUNTING
Flip open the table stand to place the main unit on a flat surface. Or
you can flip close the stand and mount the unit on a wall using the
recessed hole.
As for the remote unit, it comes with a wall-mount holder and a
removable stand. Use either to hold the unit in place.

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Main Unit
Remote Unit
THE RESET BUTTON
The RESET button is used to enhance synchronization of signals
after battery replacement or when the unit is operating in an
unfavorable way or malfunctioning. Use a bluntstylus to hold down
the button. All settings will return to their default values.
MAINTENANCE
When handled properly, this unit is engineered to give you years
of satisfactory service. Here are a few product care instructions:
1. Do not immerse the unit in water. If the unit comes in contact
with water, dry it immediately with a soft lint-free cloth.
2. Do not clean the unit with abrasive or corrosive materials.
Abrasive cleaning agents may scratch the plastic parts and
corrode the electronic circuit.
3. Do not subject the unit to excessive: force, shock, dust,
temperature, or humidity. Such treatment may result in
malfunction, a shorter electronic life span, damaged batteries,
or distorted parts.
4. Do not tamper with the unit’s internal components. Doing so
will terminate the unit’s warranty and may cause damage. The
unit contains no user-serviceable parts.
5. Only use new batteries as specified in this instruction manual.
Do not mix new and old batteries as the old batteries may leak.
6. Read this instruction manual thoroughly before operating the
unit.
Table Stand Wall Mount
Table Stand Wall Mount

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SPECIFICATIONS
Temperature Measurement
Main Unit
Indoor Temperature measurement
Proposed operating range : -5.0°C to +50.0°C
(23.0°F to 122.0°F)
Temperature resolution : 0.1°C (0.2°F)
Diagram temperature scale : ≤-7°C to ≥7°C
Ice Warning function : -2°C to +3°C
(Channel-1 Remote Sensor) (28.4°F to 37.4°F)
Remote Sensor Unit
Proposed operating range : -20.0°C to +60.0°C
(-4.0°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 : 100 meters
Temperature sensing cycle : 30 seconds
User selectable °C and °F
Power
Main unit : use 2 pcs UM-3 or”AA” 1.5V
alkaline battery
Remote unit : use 2 pcs UM-4 or “AAA” 1.5V
alkaline battery
Weight
Main unit : 200 g (without battery)
Remote sensing unit : 87 g (without battery)
Dimension
Main unit : 153 (L) x 117 (W) x 23.5 (D) mm
Remote sensing unit : 152 (L) x 48 (W) x 23 (D) mm
NOTE ON COMPLIANCE
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.
FCC :
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:

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CAUTION
- The content of this manual is subject to change without
further notice.
- Dueto printing limitation, thedisplays shownin thismanual
may differ from the actual display.
- The contents of this manual may not be reproduced without
the permission of the manufacturer.
■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 needed.
■Consult the dealer of an experienced radio/TV technician for
help.
R&TTE Compliance Note
This device complies with the essential requirements of Article 3
of the R&TTE 1999/5/EC Directive, if used for its intended use
and that the following standard(s) has been applied:
Electromagnetic compatibility (Article 3.1.b of the R&TTE
Directive)
Applied standards ETS 300 683 : 1997
Efficient use of the radio frequency spectrum (Article 3.2 of the
R&TTE Directive)
Applied standards EN300 220 –1 : 1997