Oregon Scientific Radio Controlled Wireless Weather Station C8266B Users Manual C
C8266B to the manual 540d3cba-7b28-459b-9f0f-965aea3cdb9d
2015-02-04
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C8266B-PD09535M   (DCF) -EN          Size: A4
EN
RADIO CONTROLLED
WIRELESS WEATHER STATION
MODEL:JW102
USER MANUAL
BRIEF INTRODUCTION
Thank you for your purchase of this delicate Wireless
Weather Station. The utmost care has gone into the
design and  manufacture  of  your  clock.  Please  read
these instructions carefully and keep the manual well
for future reference.
The multifunctional weather station is equipped with
many functions providing thorough weather information
to you. The receiver unit has a clear, easy-to-read
display that shows the indoor temperature, moon phase,
time, month, date as well as the temperature measured
and transmitted from the remote sensors. It is able to
receive  and display  readings  from  up  to  3  remote
sensors.
The 433 MHz technology means no wire installation is
required and you can place the sensors anywhere you
like.
With radio controlled function, the current time and
date are automatically synchronized with the time signal
transmitted  from  Germany(DCF).
    MAIN  FEATURES:
      WEATHER  STATION
1.  CLOCK  WINDOW:
  •Displays time, year, signal strength indicator,
daylight savings time (DST), alarm icons.
2. CALENDAR AND MOON PHASE WINDOW:
  •Displays the month, date, day of the week, alarm
time as well as the moon phase.
3. WEATHER FORECAST AND TEMPERATURE
W INDOW:
  •Shows the current indoor & outdoor temperature,
the maximum/minimum temperature as well as
the current channel.
4. TIME key:
  •In normal time mode, press it to enter alarm1
and alarm2 time mode.
  •Press and hold  it  for  2  seconds  to  enter  the
normal time setting mode.
  •In normal time setting mode, press it to step the
setting items.
5. CHANNEL key:
  •Press it to switch among channel 1, 2 and 3.
  •Press and hold it for 2 seconds to show the
channels automatically, and press it once again
to exit the automatic display mode.
6. MAX/MIN key:
  •Press  it  to  show  the  maximum  and  minimum
temperature records.
  •Press and hold it for 3 seconds to delete the
max. and min. records.
7. SNOOZE key:
  •Press it to stop the current alarm when it  is
sounding.
8. ALARM ON/OFF key:
  •In normal time mode, press it to turn on/off alarm1
& alarm2.
  •In alarm time mode, press it to turn on/off alarm
and temperature pre-alarm.
  •In  alarm  time  mode,  press and hold  it  for  2
seconds to enter the alarm time setting mode.
  •In alarm time setting mode, press it to step the
setting items.
  •Press it once to stop the current alarm when it is
sounding.
9.  RESET  key:
  •Press  it  to  reset  all values  to  default values.
  •In case of malfunction, the unit may be required
to reset.
10. UP key:
  •In normal time mode, press it to switch between
M-D  (Month-Date) and D-M  ( Date-Month)
formats.
  •In  time setting mode,  press  it  to  increase  the
setting values.
  •Press and hold it for 3 seconds to receive the
RC signal for reception  testing.
11. DOWN key:
  •Press it to switch 12/24-hour format.
  •In  time setting mode, press  it  to  decrease  the
setting values.
12. SYNC key:
  •Press and hold it for 3 seconds to turn on/off the
signal reception of transmitter (433 MHz)
manually.
13. °C/°F key:
  •Press it to switch between Celsius and Fahrenheit.
14. WALL-MOUNTING HOLDER:
  •Use it to support the main unit in the wall
mounting.
15. BATTERY COMPARTMENT:
  •Accommodates 4 AA size batteries.
16. TABLE STAND:
  •Use it to stand the clock on the desktop.
    TRANSMITTER
1. LCD indicator:
  •Displays the current temperature monitored  by
the remote  unit.
2. CHANNEL slide switch:
  •Assign the transmitter to Channel 1, 2 or 3.
3.  RESET  key:
  •Press it to restart the  transmitter and return all
values  to  default  values.
4. °C/°F key:
  •Switches between Celsius and Fahrenheit.
5. BATTERY COMPARTMENT:
  •Accommodates 2 AA size batteries.
6. BATTERY DOOR
7. WALL-MOUNTING HOLDER:
  •Use it to support the transmitter on the wall.
8. TABLE STAND:
  •Use it to stand the transmitter on the desktop.
RECEPTION  OF  TRANSMITTER  SIGNAL
OPERATING THE WEATHER STATION
1. Remove  the battery door and insert 4  AA size
batteries into the battery compartment as per
the polarity information marked on the battery
compartment.
2. Replace  the battery door.
3. Press “RESET” key to restart the clock.
4. Press “CHANNEL” key to set the desired
channel.
Note:
1. When  the  transmitter signal is received,  the
icon “ ” will be shown and flash for 3 times.
2. The building material and position of receiver
and transmitter affect the effective range.  So
try various locations to obtain the best result.
3. Place  the units away  from  metal objects and
electrical appliances to minimize the interference.
Position the receiver within the effective
transmission  range:  30  meters in  usual
circumstances.
  OPERATING THE TRANSMITTER
1. Remove the transmitter from the stand and
open the battery door.
2. Insert 2 AA size batteries into the battery
compartment as per the polarity information
marked on the battery compartment.
3. Slide “CHANNEL” switch to synchronize the
channel with receiver.
4. Press “RESET” key individually by a pin  to
confirm the channel setting.
5. Press “°C/°F” key to select the temperature
unit.
6. Replace  the battery door.
Note:
1. To receive the transmitter signal, the channels
of  receiver  and transmitter  must  be
synchronized.
2. The icon  “ ”  will flash for 3 times when the
signal is being transmitted.
3. Once the channel is assigned to a transmitter,
you can only change it by removing the batteries
or resetting the unit.
   RECEPTION  OF  RADIO  CONTROLLED
   TIME SIGNAL
The time and date are radio-controlled. The current
time and date are automatically synchronized with the
signal  transmitted from  Germany (DCF).
When used  for  the  first  time (after inserting  the
batteries or pressing “RESET” key), the clock will start
to  receive  the signals and  the reception display will
flash in 8 seconds.
DAYLIGHT  SAVINGS  TIME (DST)
The  clock has  been  programmed  to  automatically
switch when the daylight savings time is in effect.Your
clock will show “DST” during  the summe.
SIGNAL  STRENGTH  INDICATOR
The signal indicator displays signal strength in 4 levels.
Wave segment flashing means time signals are being
received. The signal quality could be classified into 4
types:
Note:
1. The unit will automatically search for the time
signal at 2:00 (3:00 or 4:00 is also available if
the signal was not received at 2:00), 8:00, 14:00
and 20:00 each day.
2. Always place the unit away from interfering
sources such as TV set, computer etc.
3. Avoid placing the unit on or next to metal plates.
4. Closed area such as airport, basement, tower
block or factory is not recommended.
5. Do not start reception in moving articles such
as  vehicles  or trains.
TIME  AND  CALENDAR MANUALSETTING
If  you  are  out  of reach  of the  Radio  Controlled
transmitter or if the reception is not reachable, the
time and calendar can be set manually. As soon as the
signal  of  transmitter  is  received again,  the  clock will
automatically synchronize with  the exact  time and
calendar.
1. Press and hold  “TIME” key for 2 seconds until
the Year digit  flashes.
2. Press “UP” or “DOWN” key to change its value.
3. Press “TIME” key once until the Month digit
flashes.
4. Press “UP” or “DOWN” key to change its value.
5. Repeat the above operations (point 3, 4) to set
the below items in this order: Date > Hour  >
Minute > Second > Day language > +/-23 hours
time difference.
6. Press  “TIME” key  to  save and exit  the setting
mode, or let it exit automatically 30 seconds
later without pressing any key.
Note:
1. Through“+/-23 hours time difference” setting,
the precise time of another area will be shown.
2. The 5 languages weekday settings are
represented by  the below abbreviations:
GB=English  FR=French  DE=German
ES=Spanish  IT=Italian.
ALARM  TIME  SETTING
1. In normal time mode, press “TIME” key to enter
the alarm1 (alarm2) time mode.
2. Press and hold “ALARM ON/OFF” key for  2
seconds until the alarm Hour digit flashes.
3. Press “UP” or “DOWN” key to change its value.
4. Press “ALARM ON/OFF” key once until the alarm
Minute digit flashes.
5. Press “UP” or “DOWN” key to change its value.
6. Press “ALARM ON/OFF” key to save and exit
the setting mode, or let it exit automatically 30
seconds later without pressing any key.
Note:
1. The alarm will be automatically turned on when
you set the alarm time.
2. The dual-alarm (alarm1 & alarm2) design of this
unit  provides  you with  more  convenience,  and
you can set two-alarm time if needed.
USING  ALARM  &  TEMPERATURE
   PRE-ALARM  FUNCTIONS
1. Set the alarm time as the above section with
alarm1 (alarm2) turned on when you set the alarm
time.
2. In alarm1 (alarm2) time mode, press “ALARM
ON/OFF”  key  once  to  turn  on  the  temperature
pre-alarm with the icon “ ” displayed.
4
5
6
7
8
1
2
3
DOWN
UP
C /  F
SYNC
O
O
14
15
16
DOWNUP C /  FSYNC
O O
9 10 11 12 13
3
2
5
7
14
7
6
8
433 MHz
THERMO  SENSOR
433 MHz
THERMO  SENSOR
No signal quality
Acceptable signal qualityExcellent signal quality
Weak signal quality
DOM
LUN
MAR
MIE
JUE
VIE
SAB
DOM
LUN
MAR
MER
GIO
VEN
SAB
English
SON
MON
DIE
MIT
DON
FRE
SAM
German
DIM
LUN
MAR
MER
JEU
VEN
SAM
French
Spanish
Italian
SUN
MO N
TUE
WED
THU
FRI
SAT

3. Press  it  again  to  turn  off  both  of  them  until  the
icons disappear.
Note:
1. To turn on temperature pre-alarm, ALARM must
be on.
2. The temperature pre-alarm can sound 30 minutes
earlier  than  the  alarm  only  when  the  outdoor
temperature is below -3°C (26°F).
3. If no key is pressed during the alarm period, the
clock will enter the snooze mode automatically.
Besides,  you  can  also  press  “SNOOZE”  key
once to stop the current alarm and activate the
snooze  function.
4. Once  the  snooze  function  is  activated,  the  4-
step crescendo alarm will sound 13 times in 5-
minute  interval.  The  alarm  duration  is  60
seconds.
VIEWING  THE  CHANNEL
The default channel is Channel 1. Press “CHANNEL”
key  to  view  the  channels  from  1  to  3.
Besides, press and hold “CHANNEL” key for 2 seconds
to show the channels automatically; press it once again
to  exit  the  automatic  display mode.
HOW  TO  READ  TEMPERATURE  RECORDS
Change the temperature unit to °C for Celsius or °F for
Fahrenheit  by  pressing  “°C/°F” key.
Note:
1. If no signals are received or the transmission is
interfered, “---” will appear on the LCD.
2. Relocate  the  clock  or  transmitter  in  other
positions  and  make sure  the transmission  is
within the  effective range of  30 meters approx.
3. After  several  trials  in  vain,  please  reset  the
clock  thoroughly.  Try  out  where  your
multifunctional alarm clock receives the signals
best.
CHECKING    AND    DELETING    MAX./MIN.
TEMPERATURE RECORDS
1. Press  “MAX/MIN”  key  once  to  check  the
maximum temperature records. Press it twice to
check  the  minimum  records.  Press  it  again  to
exit.
2. Press and hold “MAX/MIN” key for 3 seconds to
delete the max. and min. temperature records.
    WEATHER  FORECAST  INDICATOR
The built-in barometer can notice atmosphere pressure
changes.  Based  on  the  data  collected,  it  can  predict
the weather conditions in the forthcoming 12-24 hours.
Note:
1. The  accuracy  of  a  general pressure-based
weather forecast is about 70% to 75%.
2. The weather forecast is meant for next 12 to 24
hours. It may not necessarily reflect the current
situation.
3. The  “Rainy”  and  “Stormy”  icons  are  different
only in the dropping frequency of the rain. The
rain dropping frequency in “Stormy” icon is faster
than  that  in  “Rainy”  icon.
4. The “Snowy” weather forecast  is not based on
the  atmosphere  pressure  but  on  the  outdoor
temperature. When the  outdoor temperature is
below  -3°C  (26°F),  the  “Snowy”  icon  will  be
displayed on the  LCD.
    ABOUT  THE  MOON  PHASE
The  unit has  8  different  moon  phases.  It  will  change
according to the lunar calendar.
  BATTERY  REPLACEMENT
If  the  LCD  becomes  dim,  it  means  that  you  should
replace  batteries  of the clock  immediately.
If  the  low  battery  indicator  “ ”  appears  in  the
WEATHER FORECAST AND TEMPERATURE window
of the clock (“   ”) or on the LCD of transmitter, you
should replace batteries of transmitter at once.
Note:
Attention! Please  dispose of used unit or batteries  in
an  ecologically  safe  manner.
USING  THE  TABLE  STAND  OR
     WALL-MOUNTING    STAND
The  receiver  and  transmitter  have  both the  desktop
and wall-mounting structures.
For the receiver, place the screw on the desired wall
and  hang  the  receiver  by  the  recessed  hole  in  the
back of it or just simply place it on the desktop by its
table stand.
For  the  transmitter,  fix  the  separate  wall-mounting
stand outside in the area protected from direct rain by
the  screw.  Once  the  stand  is  mounted,  place  the
transmitter  into  the  stand  on  the  wall.  Besides,  you
can also place it on the desktop by its table stand.
  SPECIFICATIONS
 Note  We recommend that you use alkaline batteries
with this product for longer usage and lithium batteries
in temperatures below freezing.
PRECAUTIONS
Do  not  subject  the  unit  to  excessive  force,
shock,  dust,  temperature  or  humidity.
Do not cover the ventilation holes with any items
such as newspapers, curtains etc.
Do  not  immerse  the  unit  in  water.  If  you  spill
liquid over it, dry it immediately with a soft, lint-
free  cloth.
Do not clean the unit with abrasive or corrosive
materials.
Do not tamper with the unit’s internal components.
This invalidates the warranty.
Only use fresh batteries. Do not mix new and old
batteries.
Images  shown  in  this  manual  may  differ  from
the  actual  display.
When  disposing  of  this  product,  ensure  it  is
collected  separately  for  special  treatment  and
not as normal household waste.
Placement  of  this  product  on  certain  types  of
wood may result in damage to its finish for which
Oregon Scientific will not be responsible. Consult
the furniture manufacturer’s care instructions for
information.
The contents of this manual may not be reproduced
without the permission of the manufacturer.
Do not dispose old batteries as unsorted municipal
waste.  Collection  of  such  waste  separately  for
special  treatment  is  necessary.
Please note that some units are equipped with a
battery  safety  strip.  Remove  the  strip  from  the
battery  compartment  before  first  use.
  Note The  technical  specifications  for  this  product
and  the  contents  of  the  user  manual  are  subject  to
change without notice.
ABOUT OREGON SCIENTIFIC
Visit our website (www.oregonscientific.com) to learn
more about Oregon Scientific products. If you’re in the
US  and  would  like  to  contact  our  Customer  Care
department  directly,  please  visit:
www2.oregonscientific.com/service/support
OR
Call 1-800-853-8883.
MAX. Temperature records
MIN. Temperature records
Sunny
Slightly cloudy
Cloudy
Rainy Stormy Snowy
Waxing crescent 
New moon 
First quarter
Waxing gibbous
Full moon Waning gibbous Last quarter Waning crescent
Transmitter’s low battery indicator
(shows on the transmitter)
Transmitter’s low battery indicator
(shows on the main unit)
DOWNUP C /  FSYNC
O O
DESCRIPTION
430 (W) x 33 (D) x  (H) mm288
(16.93 x 1.3 x 11.34 in)
433 MHz
0 °C to 45 °C 32 °F to 113 °F  ( )
from year 2000 to 2099
4 x AA  1.5V  batteries
40 (W) x  (D) x  (H) mm23.5 128
(1.57 x0.93 x  in)5.04
433 MHz
3
TYPE
MAIN UNIT
L x W x H
Signal frequency
Temperature
range
Moon  phase
scanner range:
Power
REMOTE UNIT 
L x W x H
Signal frequency
Number of channel
Transmission range 30 m (98 ft) unobstructed
Weight
Weight
-20 °C to 55 °C 
-4 °F to 131 °F
2 x AA  1.5V  batteries
Temperature range
Power
EU-DECLARATION OF CONFORMITY
Hereby, Oregon Scientific, declares that the Indoor /
Outdoor Thermometer   (Model JW102
)  is  in  compli-
ance  with  the essential requirements  and  other rel-
evant  provisions  of  Directive  1999/5/EC.
A  copy  of  the  signed  and  dated  Declaration  of
Conformity is available on request via our Oregon
Scientific  Customer  Service.
COUNTRIES RTTE APPROVAL COMPLIED
ALL EU countries, Switzerland CH
                                           and Norway N