WIRELESS WEATHER STATION
WIRELESS WEATHER STATION
C-8105/C-8145
Please Note
We are unable to supply
Additional Sensors for
This Weather Station
P17810500050
USER’S INSTRUCTIONS
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 weather forecast, indoor temperature, relative
humidity, pressure, moon phase, time and date, as well as
the temperature and relative humidity measured and
transmitted by the sensor. It is able to receive and display
readings from up to 3 remote sensors.
The receiver unit retains the minimum and maximum
temperatures and relative humidity readings measured at
various locations. 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 Frankfurt Germany (DCF77) / UK (MSF) /
US (WWVB). The signal can cover a distance of about 1500
km from the related transmitter.
NOTE:
C-8145 is without humidity.
Weight
Main unit: 298gm
Remote sensor: 53gm
Dimension
Main unit: 115(W)x220(H)x 90(D)mm
Remote sensor: 65(W)x93(H)x 27(D)mm
FCC Remarks:
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 operation.
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.
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:
l Reorient or relocate the receiving antenna.
l Increase the separation between the equipment and receiver.
l Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
l Consult the dealer or an experienced radio/TV technician for help.
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REMOTE SENSOR
AM
PM
Zz
YEAR
DATE
mb
842
6
IN
CH
Temperature measuring range: -20 ºC to +60 ºC
Recommended operating range: -20 ºC to +55 ºC
Temperature resolution: 0.1 ºC / 1ºF (above 0 ºC)
1 ºC / ºF (below 0 ºC)
Remote relative humidity measuring range: 20% RH to 90% RH
Recommended operating range: 20% RH to 90% RH
Resolution: 1%RH
RF transmission frequency: 433MHz
No of remote unit: up to 3 units
RF transmission range: Maximum 30 meters
Temperature sensing cycle: around 60 ~ 64 sec
onds
Pressure measuring range: 800mb to 1050mb
Pressure sampling cycle: 15 minutes
MAIN FEATURES:
WEATHTER STATION:
Moon phase scanner range: From 2000 to 2050
Radio controlled signal: DCF77, MSF, WWVB
Power:
Main unit: 4.5 V, use 3 x AA 1.5V
0.24
0.18
0.12
0.06
0
0.06
0.12
0.18
0.24
InHg
Hr
MONTH
1224 18 6 302 01
2
4
6
8
hPa
Hr
inHg
hPa
M
DAY
PRE- AL
DST
alkaline battery
Remote sensor: 3 V, use 2 x AAA 1.5V
C-8105 display C-8145 display
alkaline battery
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1. TIME:
- Press it once to view the year.
- Press and hold it for 2 seconds to enter the time setting
mode.
2. ALARM:
- Press it to switch to alarm and temperature alarm.
- In alarm mode, press and hold it for 2 seconds to enter
the alarm and pre-alarm setting mode.
3. UP:
- In normal time mode, press it to choose between
channel (1), (2) and (3).
- In setting mode, press it to increase the setting value.
- In alarm mode, press it to turn on/off alarm and snooze.
4. DOWN:
- Press and hold it for 3 seconds, release, then press it
to change the weather indicator.
- In alarm mode, press it to turn on/off alarm and snooze.
SPECIFICATIONS
(The humidity data is for C-8105 only)
MAIN UNIT
5. HISTORY:
- Check the past 24 hours pressure records.
6. MAX/MIN :
- Press it once to check max./ min. temperature record.
- Press and hold it for 3 seconds to delete the max. and
min. record.
7. SNOOZE / LIGHT:
- Press it once, EL backlight keeps on for 5 seconds.
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Indoor temperature measuring range: -5 ºC to +50 ºC
Recommended operating range: 0 ºC to +45 ºC
Temperature resolution: 0.1 ºC / 1ºF (above 0
ºC)
1 ºC / ºF (below 0 ºC)
Indoor relative humidity measuring range: 20% RH to 90% RH
Recommended operating range: 20% RH to 90% RH
Resolution: 1% RH
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C-8145:
CH
IN
TEMP OUT
NOTE:
- Press it to stop alarm when it is sounding.
8. Table stand:
TEMP
- Use to stand on desktop.
9. mb/hPa . inHg:
- Switch between mb/hPa or inHg.
Attention should be drawn to the environment aspects of
battery disposal
USING THE TABLE STAND OR WALL MOUNTING
The receiver has both desk-top and wall-mounting structure.
Fix the separate wall-mounting stand on the wall by screws.
Push the stand of the clock upward, hang it on the
wall-mounting stand by its recessed holes.
For the transmitter, fix the wall-mount holder on the wall or
simply place it on the table.
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10. ºC / ºF:
- Switch between ºC / ºF.
11. RESET:
- Press it to set all values to factory value.
- In case of mal-function, the unit may be required to
reset.
12. WEATHER FORECAST WINDOW:
- Displays the weather forecast indicator.
13. OUTDOOR TEMPERATURE AND HUMIDITY WINDOW:
- Shows the outdoor temperature-trend, humidity-trend,
current temperature, current humidity or the
maximum or minimum recorded temperature and
humidity.
(For C-8145, only temperature record is displayed).
14. INDOOR TEMPERATURE AND HUMIDITY WINDOW:
- Shows the indoor temperature-trend, humidity-trend,
current temperature, current humidity or the maximum
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or minimum recorded temperature and humidity.
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5
6
7
15. ATMOSPHERIC PRESSURE CHART:
- Shows the atmosphere pressure trend of the last 24
hours.
(For C-8145, only temperature record is displayed).
16. ATMOSPHERE PRESSURE WINDOW:
- Displays the current atmospheric pressure data and
indicates the last 24 hours pressure history.
17. CALENDAR WINDOW:
- Displays the date, year, day of the week and moon phase.
18. CLOCK WINDOW:
- Displays the time and radio controlled signal.
19. WALL-MOUNTING ST AND:
- Use to support the main unit on wall.
TRANSMITTER:
1
2
3
4
1
8
2
3
4
LOW BATTERY INDICATOR
When the battery does not have enough power to operate
the unit, the low battery indicator will appear to remind you
to replace with new batteries.
Transmitter’s low battery indicator Transmitter’s low battery indicator
( shows on transmitter ) ( shows on the main unit)
CH
CH
%
Receiver’s low battery indicator
IN
%
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8
9
InHg
hPa
0.24
0.18
0.12
0.06
0
0.06
0.12
0.18
0.24
8
6
4
2
2
4
6
8
Hr
1224 18 6 302 01
hPa
Hr
mb
1. LED indicator:
- Flashes when the remote unit transmits a reading.
ABOUT THE MOON PHASE:
The unit has 8 different moon phases. It will change
according to the lunar calendar.
1. New moon 5. Full moon
2. Waxing crescent 6. Waning Gibbous
3. First quarter 7. Last quarter
4. Waxing Gibbous 8. Waning crescent
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2. LCD:
- Displays the current temperature and humidity
monitored by the remote unit alternatively.
(For C-8145, only temperature record is displayed).
3. Channel slide switch:
- Assign the transmitter to Channel 1, Channel 2 or
Channel 3.
4. ºC / ºF:
- Switches between ºC / ºF.
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5. RESET:
- Return all values to default value.
6. Battery compartment:
- Accommodates 2 AAA size batteries.
7. Battery door
8. Wall mount holder:
- Supports the transmitter in wall mounting.
9. Folding table stand
BEFORE YOU BEGIN
TRANSMITTER:
PAST 24 HOURS PRESSURE RECORDS
1. Remove the removable stand, unscrew the screws of the
back cover and lift the cover off.
2. Insert 2 x AAA batteries into the battery compartment. Be
sure to insert them the right way round (see polarity
information +/- in the battery compartment).
3. The receiver can receive humidity and temperature data
from up to 3 transmitters. Assign the channel to each
transmitter, Channel 1, 2 or 3 respectively by sliding the
switch besides the battery compartment.
4. Press the reset key of the transmitter individually by a pin
to confirm the channel setting.
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The current and historical barometric pressure is shown
on the atmospheric pressure window. The atmospheric
pressure can be displayed in mb/hPa or inHg by selecting
the atmospheric pressure slide switch at the case back.
Checking the pressure history for a particular hour during
the past 24 hour’s pressure, press the HISTORY button.
Each press on the button will go back by an hour. The
recorded atmospheric changes for the past 24 hours are
displayed in a bar chart above the atmospheric pressure window.
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2. The weather forecast is meant for next 12 to 24 hours. It
may not necessarily reflect the current situation.
3. The “Sunny” icon, when applies to nighttime, implies clear
weather.
5. Select the temperature unit by sliding the ºC / ºF switch
besides the battery compartment.
6. Re-fix the battery door, and secure its screws evenly
and diagonally.
Slightly cloudy Cloudy
TENDENCY TENDENCY
Rainy Storm Sunny
TENDENCY TENDENCY
NOTE:THE COMFORT- LEVEL ICONS (For C-8145 only )
The comfort level icons COMFORT, DRY and WET will tell
you what the current environment is.
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NOTE:
1. Once the channel is assigned to a transmitter, you can
only change it by removing the batteries or resetting the
unit.
2. Avoid placing the transmitter in direct sunlight, rain or
snow.
WEATHER STATION:
1. Remove the battery door and insert 3 x AA batteries into
the battery compartment. Make sure you insert the
batteries the right way round (see polarity information +/in the battery compartment).
2. Close the battery compartment.
3. Press reset button to re-start the clock and it will synchronize
the channels of the transmitter automatically.
NOTE:
1. If extra transmitter is added in the future, press reset
button to re-start the clock and synchronise the channel
once again.
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2. The building material and the position of the
receiver and transmitter affect the effective range. So
try various locations will help to obtain the best result.
3. Place the units away from metal objects and electrical
appliances to minimize the interference. Position the
receiver and the transmitter within effective
transmission range: 30 meters in usual circumstances.
SETTING WEATHER INDICATOR
Important: To get a better result of weather forecast
indicator, please set the weather forecast icon
according to the current weather condition.
Arrow indicator
Temperature t rend Rising Steady Falling
Arrow indicator
Humidity trend
Arrow indicator
Pressure trend
Rising Steady Falling
Rising Steady Falling
1. In normal time mode, press and hold DOWN key for 3
seconds, weather indicator flashing.
2. Press DOWN key to change the weather indicator in this
order:
Slightly cloudy - Cloudy - Rainy - Storm - Sunny
3. Choose the suitable indicator according to the current
weather.
4. Press TIME key to return to the normal mode or let it
automatically return to normal mode after 30 seconds
without pressing any keys.
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WEATHER FORECAST
The built-in barometer can notice atmospheric pressure
changes. Based on the data collected, it can predict the
weather condition in the forthcoming 12-24 hours. The
effective cover area ranges from 30 to 50 km.
NOTE:
1. The accuracy of a general pressure-based weather
forecast is about 70 to 75% , and therefore, cannot be
held responsible for any inconvenience caused by an
inaccurate data.
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MAX. Temperature / humidity record
CH
%
%
MIN. Temperature / humidity record
CH
%
IN
%
Slightly cloudy Cloudy
TENDENCY TENDENCY
Rainy Storm Sunny
TENDENCY TENDENCY
NOTE:
1. Do not set the weather indicator when it is raining.
Raining will give unstable data.
2. Do not set the weather indicator in night time.
WEATHER TREND
The temperature-trend, humidity-trend and pressure-trend
indicators show the trends of changes for the last few minutes.
Arrows indicate a rising, steady or falling trend.
RECEPTION OF RADIO CONTROLLED TIME SIGNAL
The time and date are radio-controlled. The current time
and date are automatically synchronized with the time
signal transmitted from Frankfurt, Germany (DCF77), UK/
(MSF) / US (WWVB) provided the device is within about of
1500 km range of the transmitter.
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When used for the first time (after inserting the batteries or
pressing RESET), the clock starts receiving time signals
and the reception display flashes.
If the readings go above or below the specified range, the
receiver and transmitter will keep show the last record within
the operation range.
SIGNAL STRENGTH INDICATOR
The signal indicator displays signal strength in 3 levels.
Wave segment flashing means time signals are being
received. The signal quality could be classified into three
types:
NOTE:
1. Everyday the unit will automatically search for the time
signal at 2:00, 8:00, 14:00 and 20:00.
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 plate.
4. Closed area such as airport, basement, tower block or
factory is not recommended.
5. Do not start reception on a moving article such as
vehicle or train.
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NOTE:
1. If no signals are received or the transmission is
interfered with, “---” appears in the display.
2. Locate the clock in other position and make sure the
transmission is within the effective range of 30 meters
approx.
3. After several trials but in vain, please reset the clock
thoroughly. Try out where your multifunctional alarm
clock receives the signals best.
CHECKING AND DELETING MAX./MIN.
TEMPERATURE & HUMIDITY REOCRDS
(For C-8145, only temperature is displayed).
1. Press MAX/MIN key to check Maximum temperature and
humidity records. Press it twice to check the Minimum
records. Press it thrice to exit.
2. Press and hold MAX/MIN key for 3 seconds to delete the
records.
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2. Press and hold the ALARM key for 2 seconds, pre-alarm
PRE- AL
time flashing, press UP or DOWN key to change its value.
NOTE:
To activate pre-alarm function, ALARM must be on.
Temperature alarm ON Pre-alarm mode Pre-alarm 15 minutes
AM
PRE- AL
VIEWING THE CHANNEL
The default channel is channel 1. In normal time mode,
press UP key to view the channel from 1 to 3.
HOW TO READ INDOOR AND OUTDOOR
TEMPERATURE & HUMIDITY RECORDS
Change the temperature unit by sliding ºC / ºF slide switch
to ºC for Centigrade or ºF for Fahrenheit.
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SELECT THE TIME ZONE (FOR WWVB VERSION ONLY)
The default time Zone is PACIFIC Zone, if your location is out
of Pacific, set the time zone as the following:
In normal time mode, press button to change it:
P=Pacific M=Mountain C=Central E=Eastern
MANUAL TIME SETTING
If you are out of the reach of the Radio Controlled Tranmsitter
or if the reception is not reachable, the time can be set
manually. As soon as the transmitter is received again, the
clock will automatically synchronise with the received time.
1. In normal time mode, press and hold TIME key for 2
seconds, hour flashing, press UP or DOWN key to
change its value.
2. Press TIME key again, minute flashing, press UP or DOWN
key to change its value.
3. Repeat the above operation to set the time in this order:
Hour - Minute - Second - 12/24 hour - Year - Month - Date
- Day language.
4. 5 languages weekday setting sequence is : English-GB /
French-FR / German-DE / Spanish-ES / Italian-IT.
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5. After setting completed, press TIME key to exit setting
DOM
LUN
MAR
MER
GIO
VEN
SAB
Italian
mode, or let it exit automatically in 30 seconds without
pressing any key.
English Germany
SON
MON
DIE
MIT
DON
FRE
SAM
French
DIM
LUN
MAR
MER
JEU
VEN
SAM
Spanish
DOM
LUN
MAR
MIE
JUE
VIE
SAB
ALARM AND SNOOZE SETTING
1. In normal time mode, press ALARM key once to enter the
alarm mode. Press UP or DOWN key once, alarm is on
with the bell indicator displayed. Press UP or DOWN key
again to turn on SNOOZE with Zz displayed. Press UP or
DOWN key to turn off ALARM and SNOOZE.
2. In normal mode or alarm mode, press and hold ALARM
key for 2 seconds, hour flashing. Press UP or DOWN key
to set the value. Repeat the same operation to set the
alarm minute.
3. After setting completed, press ALARM key to return to
normal mode, or let it exit automatically 30 seconds later
without pressing any key.
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NOTE:
1. The alarm will automatically turn on when setting the
alarm time.
2. The EL backlight will keep on for 5 seconds when the
alarm is sounding.
3. Once the snooze is turn on, the 4-step crescendo
alarm will sound 4 times in 5-minute interval. The alarm
duration is 120 seconds.
Alarm OFF Alarm ON Alarm and Snooze ON
AM
AMAM
Zz
SETTING THE TEMPERATURE ALARM
Use this function to be woken up at a determined period of
time earlier (1-30 minutes), if one of the transmitter’s
temperatures is below -1ºC.
1. In normal time mode, press ALARM key twice to enter
pre-alarm mode, press UP or DOWN key to turn
pre-alarm on.
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