Oregon Scientific Thermometer RAR681 User Manual

7. MEM: View current, maximum and minimum  
temperature  
8. °C / °F: Select temperature unit °C / °F  
9. RESET: Reset unit to default settings  
For best results:  
Place the sensor out of direct sunlight and  
moisture.  
Do not place the sensor more than 30 meters (100  
feet) from the main (indoor) unit.  
Position the sensor so that it faces the main (indoor)  
unit, minimizing obstructions such as doors, walls,  
and furniture.  
REMOTE SENSOR (THN122N)  
Wireless Indoor / Outdoor Thermometer  
with Digital Clock  
Place the sensor in a location with a clear view to  
the sky, away from metallic or electronic objects.  
Position the sensor close to the main unit during cold  
winter months as below-freezing temperatures may  
affect battery performance and signal transmission.  
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Model: RAR681  
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USER MANUAL  
The transmission range may vary depending on many  
factors. You may need to experiment with various  
locations to get the best results.  
INTRODUCTION  
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Thank you for selecting the Oregon ScientificWireless  
2
Indoor  
/
Outdoor Thermometer with Digital Clock  
(RAR681). The main unit can support up to 3 sensors.  
To purchase additional sensors, please contact your  
local retailer.  
Standard Alkaline batteries contain significant  
amounts of water. Because of this they will freeze  
in low temperatures of approximately -12°C (10°F).  
1. LED status indicator:  
Blinks red during data  
transmission  
1. Wall mount hole  
2. RESET hole  
3. CHANNEL switch  
4. Battery compartment  
Disposable Lithium batteries have  
a
much lower  
NOTE Please keep this manual handy as you use  
your new product. It contains practical step-by-step  
instructions, as well as technical specifications and  
warnings you should know about.  
threshold for temperature with an estimated freezing  
range of below -40°C (-40°F).  
2. Ventilation duct  
GETTING STARTED  
POWER  
Wireless ranges can be impacted by a variety of factors  
such as extremely cold temperatures. Extreme cold  
may temporarily reduce the effective range between the  
sensor and the base station. If the unit’s performance  
fails due to low temperature, the unit will resume proper  
functioning as the temperature rises to within the  
normal temperature range (i.e. no permanent damage  
will occur to the unit due to low temperatures).  
OVERVIEW  
Insert batteries before first use, matching the polarity  
(+ and -).  
FRONT VIEW  
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12  
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SENSOR DATA TRANSMISSION  
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14  
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Data is sent from the sensor(s) every 40 seconds. The  
reception icon in the outdoor temperature area shows  
the status.  
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ICON  
DESCRIPTION  
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NOTE Install batteries in the remote sensor before the  
main unit. Press RESET after each battery change. Do  
not use rechargeable batteries. We recommend that  
you use alkaline batteries with this product for longer  
usage and lithium batteries in temperatures below  
freezing.  
Main unit is searching  
for the sensor(s)  
16  
10  
A channel has been found  
Sensor 1 is sending data  
The sensor cannot be found.  
1. Sensor low battery warning  
2. Outdoor temperature trend icon  
3. Hi / lo alarm is displayed  
4. Ice warning is active  
5. Channel number and sensor reception status  
6. Maximum / minimum outdoor temperature reading  
7. Outdoor temperature reading  
8. Alarm is set  
9. Alarm is displayed  
10. 12-hour clock  
11. Indoor temperature display icon  
12. Indoor temperature trend icon  
13. Main unit low battery warning  
14. Maximum / minimum indoor temperature reading  
15. Indoor temperature reading  
16. Time, alarm and date  
shows when batteries are low.  
UNIT  
LOCATION  
and - -.-  
Main  
Indoor temperature area  
Outdoor temperature area  
(Outdoor  
temperature area)  
Search for the sensor or  
check batteries  
Remote  
To search for a sensor:  
Simultaneously, press and hold MEM and CHANNEL  
for 2 seconds.  
REMOTE SENSOR  
The sensor collects temperature readings approx. every  
40 seconds and sends them to the main unit. The main  
unit can collect data from up to 3 sensors.  
NOTE If the sensor is still not found, check the batteries,  
obstructions, and remote unit location.  
To set up the sensor:  
1. Remove the screws from the battery door.  
2. Insert the batteries, matching the polarity (+ / -).  
CLOCK  
To set the clock:  
1. Press and hold MODE for 2 seconds.  
BACK VIEW  
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2. Press  
and  
to change the settings.  
3. Press MODE to confirm.  
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4. The setting sequence is: 12 / 24 hour format, hour,  
minute, year, date / month format, month, date, and  
display language.  
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NOTE The language options are (E) English, (F)  
French, (D) German, (I) Italian and (S) Spanish.  
To switch the clock display:  
Press MODE to toggle between:  
3. Select a channel. Make sure you use a different  
channel for each sensor.  
4. Place the sensor near the main unit. Press RESET  
on the sensor.  
5. Simultaneously press CHANNEL and MEM on the  
main unit to initiate signal sending between the  
sensor and main unit.  
Clock with seconds  
Clock with day  
Calendar  
ALARM  
6. Close the battery door and secure the screws.  
7. Place the sensor in the desired location using the  
table stand or wall mount.  
To set the alarm:  
1. Press ALARM to view the alarm.  
the display.  
will show on  
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2. Press and hold ALARM for 2 seconds.  
3. Press  
or  
to change the hour / minute settings.  
4. Press ALARM to confirm.  
1. TEMP HI / LO  
: Change settings or enable /  
To activate or deactivate the alarm:  
Press ALARM when in the alarm display.  
when the alarm is set.  
disable hi or lo temperature alarm for channel 1  
: Increase / decrease setting; activate /  
deactivate clock reception signal  
appears  
2.  
/
3. CHANNEL: Switch remote sensor display  
4. MODE: Change settings / display  
5. ALARM: View alarm status; set alarm  
6. Battery compartment  
To silence the alarm and reset it for the next day:  
Press ALARM.  
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2005.12.9 2:21:22 PM  

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