Electronics Tomorrow 706640305 433MHz RF Transmitter User Manual M043 M
Electronics Tomorrow Ltd. 433MHz RF Transmitter M043 M
User Manual
INSTRUCTION MANUAL
Locations of Control
Main Unit
SNOOZE/LIGHT BUTTON
LOCK/ALARM/TIME/CAL SWITCH
TEMP MIN/MAX BUTTON
SET BUTTON
WAVE BUTTON
°C/°F BUTTON
DST ON/OFF BUTTON
RESET BUTTON
CLEAR BUTTON
+ BUTTON
_ BUTTON
RE-SYNC BUTTON
SNOOZE ON/OFF / ALARM SWITCH
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B
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M
Model 8104
Feature
• Calendar with day of the week display from January 1, 2003 to December 31, 2069
• Hour and minute display
• 12 or 24-hour format
• Indoor temperature and remote temperature
• Centigrade or Fahrenheit readout
• Clock operating temperature from 0°C to 50°C ( 32°F to 122°F )
• Indoor, Outdoor Temperature measuring range from -50°C to 70°C (-58°F to 158°F )*
• Temperature resolution 0.1°C
*If using the wireless transmitter with temperature below 32°F or above 122°F, user are
recommended to use Lithium battery to enhance batteries life.
Before You Begin
To ensure proper functioning of the RF Thermo Clock, please follow this set up procedure.
• Insert batteries for main unit ( Refer to instructions for battery installation ).
• Place the main unit as close as possible next to the remote unit and insert batteries for the
remote unit.
• Position the remote unit and main unit within effective transmission range, which in usual
circumstances is 20 to 30 meters.
Note that the effective range is affected by the building materials and where the main and
remote unit are positioned. Try various setup for the best results.
Batteries Installation
Batteries installation of the clock
• Insert 2 "AA" batteries in polarity (+) and (-) as indicated
• Close the battery cover
• The low battery icon will show in the clock window when your batteries need replacing
Batteries installation of wireless transmitter
• Insert new batteries into transmitter
• Insert 2 "AA" size batteries in proper polarity (+) and (-) as indicated
• Close the battery door
Warning : Do not mix old and new batteries
Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel cadmium)
batteries.
Do not touch any other buttons or settings on your clock. It will automatically receive
the remote temperature.
Size: 140mm(W) x 177mm(H) total 8 pages (M043) #8697 P.2 M043P.1
•The configuration of your clock may differ somewhat from that shown in the illustration.
•"AA" or "AAA" size battery. This clock may use more than one piece of battery. Please refer to the
engraved battery marks inside the battery compartment for the correct battery type.
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D
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A
RESET°C/°F
LOCK
OPEN
Model 7062
RESET Button
Battery Compartment
Wall Bracket
°C/°F
A
B
C
D
Outdoor Remote Sensor (Transmitter)
A
CB
D
ELECTRONICS TOMORROW LTD.
MODEL NO:8104
DC 4X1.5V
MADE IN CHINA
RESET
WAVE
C/ F
CLEARMIN/MAX
TEMP
RE-SYNC
DST ON/OFF
SET
FORECAST
DAYDATEMONTH
INDOOR OUTDOOR
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Getting Started
Upon power up of the transmitter ( or pressing the reset button ), the temperature RF signal
is immediately sent to the clock. The clock attempts to receive the RF temperature signal for
5 minutes. The clock refreshes the RF temperature every 3 minutes.
Check IN / REMOTE Temperature
The indoor temperature is displayed on the IN temperature field and the remote
temperature will be displayed on the REMOTE temperature field.
If the RF temperature signal is not received within 5 minutes after power up of the receiver
(or pressing the reset button), blank "---" will appear in the outdoor temperature window of
the clock. In this case, press the HR/SYNC button of the clock. The clock will attempt
outdoor temperature reception for another 6 minutes.
After the remote temperature shows in the lower LCD panel, place the remote transmitter
outside in a shaded, dry area to protect it as if under an umbrella.
Try relocating the clock or the transmitter if the clock does not display the outdoor
temperature after 6 minutes.
Maximum and Minimum IN / REMOTE Temperature
The maximum and minimum recorded temperature readings will automatically be stored in
the memory.
Press the Max/Min button once to display the INDOOR maximum and minimum record.
Press the button again to show the REMOTE maximum and minimum record. The
respective indicators, IN and REMOTE will be displayed.
To clear the memory, press CLEAR when the maximum and minimum temperature records
are shown, it will clear the record of the shown temperature field.
To Set Calendar
Press SET one time, upper LCD show year "2002" and blinks. Press + or - button to set year.
Press and hold + or - will accelerate setting in faster speed.
Press SET again, upper LCD changes to 1M 1D and blinks, press + or - button to set month
and date.
Press and hold + or - will accelerate setting in faster speed.
To Set Time
Press SET again, time digits blink, press + or - button to set time in minutes.
Press and hold + or - will accelerate setting in faster speed.
To Set 12HR / 24 HR Time Format
Press SET again, upper LCD shows 12H and blink, press + or - button to select 12H or 24H.
Press SET again to go back to current time display or if no button is further pressed for few
minutes, the clock will go back to normal time display automatically.
To Set Daily Alarm Time
When the clock is at normal time display, press + or - to set your desired alarm time. Press
and hold + or - will accelerate setting in faster speed.
To Activate Alarm Function
1.Slide the SNZ/ALARM ON/OFF switch to ON position, the sign will appear on the time
display. The alarm function is activated.
2.When the alarm sounds, press the Snooze/Light button. The alarm will sound the same
time of the next day.
3.To deactivate the alarm function, slide the SNZ/ALARM ON/OFF switch to OFF position.
To Activate the snooze alarm
1.Slide the SNZ/ALARM ON/OFF switch to SNZ position. The sign and Zz will appear on
the time display.
2.When the alarm sounds, press the Snooze/Light button. The alarm will sound again in
approximately 5 minutes. You may repeat this function for 10 minutes.
3. To deactivate the snooze alarm, slide the SNZ/ALARM ON/OFF switch to the OFF position.
Centigrade (°C) or Fahrenheit (°F) set
Press the °C/°F button to choose the Centigrade or Fahrenheit readout. Note that the remote
temperature display on the main unit is dominated by the selection on the main unit.
Whatever the display unit of the remote unit is, it will be automatically converted to the
chosen one of the main unit.
Check weather forecast
• The Weather Forecast Station is displayed in the weather forecast reading. There are five
readings for the forecast: sunny, sunny & cloudy, cloudy, rainy and stormy.
• When the weather tendency is indicated up, it means the weather is going better. If the
weather tendency is indicated down, the weather is going bad. While the weather
tendency is indicated still, the weather remains unchanged under atmosphere pressure.
Reset the Weather Forecast Station
• Press the RESET button when the Weather Forecast Station does not operate normally.
Notes: Once resetting the Weather Forecast Station, the reliable weather data can be
obtained after about 24 hours.
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Trouble-Shooting
• Press the "Reset" button when the clock is displaying irrelevant temperature reading. This
may happen when external noise is severe enough to interfere with the RF temperature
signal.
• Press the "Reset" button on the wireless transmitter if the readout is irrelevant or does not
repond.
Care of your clock
• Avoid exposing your clock to extreme temperatures, water or severe shock.
• Avoid contact with any corrosive materials such as perfume, alcohol or cleaning agents.
• Do not subject the clock to excessive force, shock, dust, temperature or humidity. Any of
these conditions may shorten the life of the clock.
• Do not tamper with any of the internal components of this clock. This will invalidate the
warranty and may cause damage.
Receiver stage indicator
The RF Temperature signal indicator in the clock's outdoor temperature window will show
the following:
Losing Synchronization of the wireless thermometer
If the clock displayed a proper outdoor temperature in the past but now displays blank "--",
the wireless transmitter and clock may have lost synchronization. If this occurs, press the
HR/RE-SYNC button of the clock. The clock will attempt outdoor temperature reception for
another 6 minutes and reinitiate synchronization with the wireless transmitter. If the remote
temperature cannot be received, check:
1. The distance of the clock or wireless transmitter should be at least 3-4 feet away from
any interfering sources such as computer monitors or TV sets.
2. Avoid placing the receiver onto or in the immediate proximity of metal window frames.
3. Using other electrical products such as headphones or speakers operating on the same
signal frequency (433MHz) may prevent correct signal transmission and reception.
4. Neighbors using electrical devices operation on the 433MHz signal frequency can also
cause interference.
Note: When the 433MHz signals is received correctly, do not re-open the battery cover of
either the wireless transmitter or the clock, as the batteries may spring free from the
contacts and force a false reset. Should this happen accidentally then reset both unit (see
Getting Started above) otherwise transmission problems may occur.
The maximum transmission range is 100 feet from the wireless transmitter to the clock (in
open space). However, this depends on the surrounding environment and interference
levels. The temperature signal travels in a straight line from the transmitter to the clock. The
signal will not curve around blocking object. Each will or floor the signal must pass through
is equal to approximately 20 feet of open space. If no reception is possible despite the
observation of these factors, all system units have to be reset ( see Getting Started ).
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Interference
Signals from other household devices, such as entry controls, door bells and home security
systems, may temporarily interfere with the clock and cause reception failure. This is normal
and does not affect the general performance of the product. The transmission and reception
of temperature reading will resume once the interference has stopped.
Using the Stand
The remote unit comes with a wall mount holder which can hold the unit on wall, or just
place it on a flat surface.
NO SIGNAL DETECTION
SIGNAL DETECTION
SUCCESSFUL RECEPTION
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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 of more of the following measures:
• 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 connected.
• Consult the dealer or an experienced radio/TV technician for help.
Under the environment with radio frequency interference, the sample may malfunction and
require user to reset the sample.
Specification
Temperature measuring range
Receiver : -50°C to +70°C with 0.1°C resolution
-58°F to 158°F with 0.2°F resolution
Transmitter : -50°C to +70°C with 0.1°C resolution
-58°F to 158°F with 0.2°F resolution
Temperature checking interval
Receiver : every 16 seconds
Transmitter : every 16 seconds
Transmission distance: maximum 100 feet in open field, depending upon surrounding
structures, mounting location and possible interfering sources.
Power source ( Alkaline batteries recommended )
Receiver : 2 "AA" batteries, 1.5V batteries
Transmitter : 2 "AA" batteries, 1.5V batteries
Battery life : about 12 months
Dimension ( L x W x H )
Receiver : 132 x 79 x 63 mm
Transmitter : 120 x 40 x 45mm
Correct usage of the batteries
• Use 4 new "AA" batteries
• Do not mix standard of rechargeable batteries
• Do not mix new and old batteries
• When the low battery mark " " appears on the display, replace the appropriate
batteries with new ones.
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