Oregon Scientific Clock JMR828A User Manual

JUMBO RF WALL CLOCK  
WITH INDOOR - OUTDOOR THERMOMETER  
MODEL NO.: JMR828A  
Instruction Manual  
INTRODUCTION  
A6  
Congratulations on purchasing the Jumbo RF Wall Clock with  
Indoor-Outdoor Thermometer (JMR828A).  
The JMR828A is a multifunctional radio frequency (RF) controlled  
clock. It is designed to automatically synchronize its current  
time and date when brought within range of the radio signal  
generated from the U.S Atomic clock.  
A1  
A3  
Also, this unit displays outdoor and indoor temperature.  
A2  
Included in this package is a remote thermo-sensor. Place the  
thermo-sensor in a sheltered outdoor location within a 100 feet  
(30 meters) radius of the main unit and it will transmit outdoor  
temperature readings to the JMR828A.  
DESCRIPTION OF PARTS  
A
MAIN UNIT  
A1 Extra-large liquid crystal display (LCD)  
• Displays the time, date and day-of-the-week  
A5  
A7  
A4  
A2  
[
] Radio-reception signal  
Indicates the condition of radio reception  
] Low-battery indicator  
Activates when the battery power is low  
] Low- battery indicator (remote sensor)  
Activates when the remote-sensor battery power is low  
A3  
A4  
[
A15  
A12  
A11  
A8  
[
A9  
A10  
A14  
A5 Bottom line of LCD  
A13  
Displays indoor temperature /date / outdoor temperature  
A6 [ CHANNEL  
Toggles between different channels  
] button  
]
A11 [°C/°F] Slide Switch  
A7  
[
CLOCK  
Toggles between Degree Celsius (°C) or Degree Fahrenheit  
(°F) temperature display unit  
Toggles between “seconds” and day-of-the-week  
displays or activates the calendar-clock setting mode  
A12 [  
] Button  
RESET  
A8  
[
] UP button  
Resets the unit by returning all settings to their default  
values  
Increases the value of a setting  
A9 [ ZONE ] button  
A13 Battery Compartment  
Toggles among the 4 US time-zones: Pacific (P),  
Mountains (M), Central (C) or Eastern (E)  
Accommodates two UM-3 or AA-size 1.5V batteries  
A14 Table Stand  
A10 [  
] button  
THERMO  
For placing the unit on a flat surface  
A15 Wall-Mount Hole  
Retrieves temperature information  
For mounting the unit on a wall  
 
1
3. Replace the door so that it clicks into place.  
Note: If not disposed of properly, batteries can be  
harmful. Protect the environment by taking  
exhausted batteries to authorized disposal stations.  
day-of-the-week display  
Note: [  
] Low-battery indicator  
Replace the batteries when the Low-battery indicator lights up.  
ABOUT RADIO RECEPTION  
“second” display  
The JMR828A is a radio frequency (RF) controlled clock. When  
located within radio signal range from the U.S Atomic Clock , the  
clock time will automatically synchronize with time-signal  
transmission. The benefit of a RF controlled clock is that highly-  
accurate time is maintained and manual adjustments to the time  
and date are not required.  
The day-of-the-week is displayed as an abbreviation in three  
languages.  
When the batteries are first installed, the JMR828A will  
automatically search for a radio signal.  
Day-of-the-week  
Language  
Monday Tuesday Wed. Thursday Friday Saturday Sunday  
When in search mode, the antenna icon [  
] will blink. This  
English  
Spanish  
French  
process takes between two (2) and (10) minutes. After initial  
search and synchronization with the Atomic clock, short periodic  
reception-signal scans will commence several times a day.  
The antenna icon indicates the quality of reception.  
STRONG  
To change the “seconds” display to the day-of-the-week display:  
1. When the “seconds” are displayed, press [CLOCK] once.  
WEAK  
To change the day-of-the-week display to the “seconds” display:  
NO RECEPTION  
1. When the day-of-the-week is displayed, press [CLOCK] once.  
RECEIVING  
HOW TO SET THE CALENDAR CLOCK  
MANUALLY  
To deactivate the auto-reception of the radio signal, press and  
hold [ZONE] for 2 seconds and the antenna icon will disappear.  
To enable this auto-reception again, press and hold [  
seconds. The antenna icon will re-appear.  
] for 2  
When the unit is outside of the radio signal generated from the  
U.S Atomic Clock, the unit may require manual setting.  
Interference  
Reception can be affected by a number of factors. For best reception,  
place the device away from metal objects and electrical appliances.  
Note: The RF controlled mechanism overrides manual  
settings unless auto-reception of radio signal is being  
deactivated. If manual settings are made, the clock will  
periodically adjust the time to what is indicated by the  
radio signal.  
Note: Interference from sources such as TV sets can affect  
the signal. If, after batteries have been inserted for ten  
minutes, the radio signal is not received, then set the time  
manually (see section: How To Set The Calendar Clock  
Manually).  
It is highly unlikely you should ever have the desire (or need ) to  
manually set the clock time, year, month or date of the JMR828A  
when it is within signal range of the Atomic clock.  
However, in the event this becomes necessary please review the  
following.  
“SECONDS” AND DAY-OF-THE-WEEK  
DISPLAY  
The “second” and the day-of-the-week share the same section of  
the display.  
 
3
To manually set the clock:  
Note:  
1. Press [CLOCK] and hold for two seconds. The hour will start  
to flash.  
Reasons for not receiving a signal from the remote thermo  
sensor may include:  
1. The batteries of the remote sensor, the main unit, or both  
may be low. Low-battery icons should indicate that battery  
power is low and the batteries require changing.  
2. Enter the correct hour using the [ ] button. Hold to rapidly  
increase the value.  
3. Press [CLOCK] to confirm and proceed to set the minute.  
When the temperature falls below freezing point, the  
batteries will freeze. Frozen batteries will have a  
lower voltage and result in a lower transmission  
radius.  
Again, use the [ ] button to select the correct minute.  
4. Press [CLOCK] to proceed to set the year, month, day and  
language for day - of - week.  
5. When finished, press [CLOCK]. The time and date are now set.  
2. The transmission range is too far.  
Shorten the distance.  
6. To select the U.S. time - zone, press [ZONE] to toggle among  
Pacific(P), Mountains (M), Central(C) or Eastern (E).  
3. The transmission path is cluttered with obstacles and  
interference.  
TEMPERATURE DISPLAY  
Shorten the distance or reposition the remote sensor  
or the main unit.  
This unit displays temperature in °C or °F  
TEMPERATURE TREND INDICATORS  
The temperature-trend indicator show the trends of the collected  
remote temperature readings for the past half hour. Arrows indicate  
a rising, steady or falling trend.  
temperature display  
The remote outdoor temperature display has a kinetic-wave display.  
The kinetic-wave display shows the signal-receiving status by  
the main unit. The are three possible forms.  
Arrow indicator  
TEMP  
TEMP  
TEMP  
Temperature  
Trend  
Rising  
Falling  
Steady  
The unit is in searching mode.  
Temperature readings are  
securely registered.  
Note : If the reading goes above or below the measuring  
range of the remote unit (stated in specification), the  
display will show "HHH" or "LLL".  
No signals  
NOTE: JMR828A can also scan for max 3 different remote  
temperature channels. To do so, simply press the CHANNEL  
button once to switch to the different channel.  
HOW TO RESET THE UNIT  
Press [RESET] to return all settings to the factory values.  
The button is used when the unit is not operating in a favorable  
way, such as in the rare case of a malfunction.  
SENSOR TRANSMISSION STATUS  
If blanks "----" appear on the remote temperature display of the  
main, then the unit is not receiving a signal from the remote  
thermo sensor. The user may be able to receive a signal by doing  
a signal search.  
HOW TO WALL MOUNT OR  
USE TABLE STAND  
MAIN UNIT  
Remote Sensor Signal Search:  
Flip the table stand open to place the unit on a steady, flat surface.  
Or use the recessed hole on the back to mount it on a wall.  
Press [THERMO] and [CHANNEL] together for 2 seconds. The  
unit will search for a remote thermo-sensor signal.  
If the unit still cannot receive a signal, check the batteries to  
ensure they are properly installed and have ample power. Try  
repositioning the units as they might be having a temperature  
transmission block due to signal interference.  
 
4
Wall-mount  
Table Stand  
SPECIFICATIONS  
MAIN UNIT  
Clock Functions  
Radio Control  
: Auto synchronizes current time  
and date by Radio signal  
from the U.S. Atomic Clock  
Calendar  
: Day of week in English / French /  
Spanish  
Current month / day format  
Clock Time  
Accuracy  
: 12-hour format  
: +/- 0.5 second/day  
(when RF is disabled)  
General specification  
REMOTE THERMO SENSOR  
Power  
: Two (2) UM-3 or “AA” size  
1.5V battery  
This sensor comes with a wall-mount holder and a removable  
stand. Use either to hold the unit in place.  
Unit Dimension  
Unit Weight  
: 10.51x8.03x1.42 inches  
(267x204x36mm)  
Wall-mount  
Table Stand  
: approx. 23.28 ounces (660 gms.)  
(without batteries)  
2
Indoor Temperature Measurement  
Temperature  
Measuring Range  
: 23°F to 122°F (-5°C to 50 °C)  
Temperature Resolution : 32.2 °F(0.1 °C)  
MAINTENANCE  
REMOTE THERMO SENSOR  
When handled properly, this unit is engineered to give you years  
of satisfactory service.  
Remote Temperature  
Measuring Range  
: -4°F to 140°F (-20°C to 60 °C)  
Temperature resolution : 32.2 °F(0.1 °C)  
Here are several product-care suggestions:  
RF Transmission  
Frequency  
: 433 MHz  
1. Do not immerse the unit in water. If the unit comes in contact  
with a liquid, dry it immediately with a soft lint-free cloth.  
RF Transmission Range : Maximum 100 feet (30 meters)  
2. Do not clean the unit with abrasive or corrosive materials.  
Abrasive cleaning agents may scratch the plastic parts and  
corrode the electronic circuit.  
Power  
: Two (2) UM-3 or “AA” 1.5V battery  
Weight  
: 3.53 ounces (100gms)  
(without batteries)  
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.  
Dimension  
: 3.62x2.36x.83 inches  
(92x60x21mm)  
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.  
 
5
NOTE ON COMPLIANCE  
CUSTOMER ASSISTANCE  
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.  
Should you require assistance regarding this product and its  
operation, please contact our customer care department at  
800-853-8883 or via email at [email protected]. Our  
customer care department is available 24-7-365.  
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  
WARRANTY  
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 product is warranted to be free of manufacturing defects for  
a period of 3 months from date of retail purchase. Defective  
product should be directed to the place of retail purchase for  
exchange.  
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:  
Should this not be possible, contact our customer care department  
for assistance and a return material authorization. No returns may  
be made without a return authorization. Please retain your retail  
receipt as you may be asked to provide a copy of it for proof of  
date purchased.  
This warranty does not cover product subjected to abuse, misuse,  
accidental damage or tampering.  
o Reorient or relocate the receiving antenna.  
o Increase the separation between the equipment and receiver.  
Upon return of the defective product, Oregon Scientific will at its  
discretion, replace the product with either a new or a tested  
reconditioned product. Should the product be out of warranty,  
the consumer may purchase directly from Oregon Scientific a  
replacement at reasonable cost plus shipping and handling.  
o Connect the equipment into an outlet on a circuit different from  
that to which the receiver is needed.  
o Consult the dealer of an experienced radio/TV technician for  
help.  
Company Name: Oregon Scientific, Inc.  
Address: 19861 SW 95th Place, Tualatin, Oregon 97062, USA  
Name and model number of the product: Jumbo RF wall Clock  
with indoor - outdoor Thermometer JMR828A  
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 contents of this manual may not be reproduced  
without the permission of the manufacturer.  
 
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MODEL: JMR828A  
JUMBO RF WALL CLOCK  
WITH INDOOR-OUTDOOR THERMOMETER  
Instruction Manual  
****  
Mode D'emploi  
****  
Bedienungsanleitung  
****  
Manuale di Istruzioni  
****  
Instrucciones de Funcionamiento  
 

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