User's Manual

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INSTRUCTION MANUAL

Locations of Control

Main Unit (Receiver)

SNOOZE/LIGHT BUTTON

SNOOZE/ALARM ON/OFF SWITCH

TEMP MAX/MIN BUTTON

SET BUTTON

+ BUTTON

RE-SYNC BUTTON

SELECT BUTTON

HUMIDITY MAX/MIN BUTTON

CLEAR BUTTON

- BUTTON

WAVE BUTTON

ûC/ûF BUTTON

RESET BUTTON

DST/TIME ZONE

Model 8400

The Radio-Controlled Clock with Thermometer

With the Radio-Controlled Clock, you have the most accurate timepiece within the continent. It can

receive the time signal transmitted by the National Institute of Standards and Technology (NIST), which

is regulated by 3 atomic clocks and deviates less than 1 second within 3,000 years. The NIST

broadcasts the time signal (WWVB, 60kHz) continuously from Fort Collins, Colorado. This signal can

be received anywhere in the continental USA that long wave (AM) radio reception is possible with a

portable radio. It is expected that the signal can cover a distance of over 2,000 miles from the

transmitter. Therefore, your clock will receive the signal within the broadcast range anywhere an AM

signal can be received; generally the signal cannot be picked up in massive metal and concrete

structures unless near a window. In addition, some environmental effects (see next page) may affect

the transmitting distance.

For more information, please study the WWVB WEB page of NIST at:

http://www.boulder.nist.gov/timefreq/



Feature

¥Receive 60kHz WWVB signal transmitted by

 NIST in Fort Collins,Colorado.

¥Automatic time adjustment after signal reception.

¥Calendar with day of the week display from

 January 1, 2003 to December 31, 2039

¥Hour, minute and second display

¥12 or 24-hour format

¥Indoor temperature and remote temperature

¥Indoor humidity and remote humidity

¥Centigrade or Fahrenheit readout

¥Clock operating temperature from 0ûC to 50ûC ( 32ûF to 122ûF )

¥Indoor, Outdoor Temperature measuring range from -50ûC to 70ûC (-58ûF to 158ûF )*

¥Temperature resolution 0.1ûC

¥humidity resolution 1%

¥Time accuracy (Atomic clock): better then 1 second in 3000 years.

¥Time accuracy (free run): average with in ±60 seconds per month

*If using the wireless transmitter with temperature below 32ûF or above 122ûF, user are recommended 

 to use Lithium battery to enhance batteries life.

Attention

The Radio-Controlled Clock obtains the accurate time with wireless technology. Same as all wireless

devices, the receiving ability may be affected by, but not limited to, the following conditions:

¥Long transmitting distance.

¥Nearby mountains and valleys.

¥Among tall buildings.

¥Near railway, high voltage cable, etc.

¥Near freeway, airport, etc.

¥Near construction site.

¥Inside concrete buildings.

¥Near electrical appliances.

¥Bad weather.

¥Inside moving vehicles.

¥Nearby metallic structures.

Location Precautions

This clock receives a radio wave much like a TV or radio. Be sure to locate it near a window or some

other locations where reception is good. Avoid the following locations, which can interfere with proper

reception.

Size: 140mm(W) x 177mm(H) total 8 pages (M0xx) #xxxx P.2 M0xxP.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.

Model 7530

SELECTION

RESET Button

ûC/ûF

Remote Unit (Transmitter)

FCC ID : PEQ753090303

This device complies with Part 15 of the FCC Rules.Operation is

subject to the following two conditions: (1) thi s device may not ca-

use harmful interference,and (2) this device m ust accept any inte

rference received,including interference that may cause undesired

operation.

RESET

SELECTION

C/ F

M0xx M0xx

Before You Begin

To ensure proper functioning of the Weather Forecast Station, 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 main unit

¥Insert 4 "AAA" batteries in polarity (+) and (-) as indicated

¥Close the battery cover

¥The low battery icon will show in the display when your batteries need replacing

Batteries installation of remote unit

¥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 weather forcast station. It will automatically receive

the outdoor temperature humidity.

Getting Started

¥Upon power up of the remote unit ( or pressing the reset button ), the temperature/humidity RF  

 signal is immediately sent to the main unit. The main clock attempts to receive the RF   

 temperature/humidity signal for 5 minutes. When the RF temperature/humidity signal received after 

 power up of main unit, display will change to show the OUTDOOR readout and the main unit  

 refreshes the RF temperature/humidity every 3 minutes.

¥After the outdoor temperature/humidity shows in the lower LCD panel, place the remote unit outside 

 in a shaded, dry area to protect it as if under an umbrella.

¥If the RF temperature/humidity signal is not received within 5 minutes after power up of the main unit 

 (or pressing the reset button), only INDOOR readout will be available and LCD keep showing  

 INDOOR readout. In this case, press the RE-SYNC button of the main unit. The main unit will  

 attempt outdoor temperature/humidity reception for another 6 minutes.

Check INDOOR/OUTDOOR Temperature and Humidity

The indoor temperature and humidity displayed simultaneously on the LCD panel as well as INDOOR

icon. Press SELECT button to toggle between INDOOR & OUTDOOR readout.

Press & hold SELECT button for seconds will activate scroll mode which toggle between INDOOR &

OUTDOOR readout automatically, a scroll icon will shown for indication.

Press & hold SELECT for another few seconds will dis-activate scroll mode.

Maximum and Minimum INDOOR/OUTDOOR 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 OUTDOOR maximum and minimum record. The respective indicators, INDOOR and

OUTDOOR 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.

Maximum and Minimum IN/REMOTE Humidity

The maximum and minimum recorded humidity 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 OUTDOOR maximum and minimum record. The respective indicators, IN and

REMOTE will be displayed.

To clear the memory, press CLEAR when the maximum and minimum humidity records are shown, it will

clear the record of the shown humidity field.

Using The Clock

As long as batteries are supplying power to the main unit, it receives the time signal and adjusts time

automatically. No manual adjustment is required. Accurate adjustment of the clock based on the time

signal is supported in Germany and surrounding countries that are within the same time zone and follow

the same summer time conventions as Germany.

Signal Receive Operation

The main unit automatically receive the time signal 8 times every day at 02:00, 05:00, 08:00, 11:00,

14:00, 17:00, 20:00, 23:00 and make any required adjustment to the time setting.

The OK indicator and the antennal tower icon appears on the dipslay if the time signal is successfully

received at 02:00 or after manual press WAVE button.

*Important:

Do not perform any button or switch operation while a signal receive operation is in progress.

Triggering a Receive Operation Manually

You can trigger a signal receive operation at any time by pressing the WAVE button, which cause the

main unit to perform an immediate signal receive operation. The main unit also perform a signal receive

operation automatically whenever you replace its batteries.

Unsuccessful Signal Reception

If the automatic update other than 02:00 are unsuccessful, the wave on top of the antenna tower icon will

be disappeared. If the automatic update at 02:00 or manually triggered reception are unsuccessful, both

of the wave icon and OK icon will be disappeared.

If unsuccessful signal reception after battery installation or after reset, the main unit keep trying for 10

minutes every hour until signal reception successful.

P.4P.3

To Set The Time and Calendar Manually

1. Press SET button to active set mode.

2. Press + button or - button sequentially to set YEAR.

3. Holding down either button changes the year at high speed.

4. Press SET button to confirm YEAR set and goes to DATE set.

5. Press + button or - button sequentially to set DATE.

6. Holding down either button changes the date at high speed.

To Set Time

1. Press SET button again goes to TIME set.

2. Press + button or - button sequentially to set MINUTE.

3. Holding down either button changes the time at high speed. When you press the + button and -  

 button together, the seconds count reset to 00.

To Set 12/24 HR International Time

1. Press SET button again goes to TIME FORMAT set.

2. Press + button or - button to slect 12 or 24 hour display format.

3. Press SET button to confirm TIME FORMAT and finish the setting.

To Set The Alarm Time

1.Press + button or - button sequentially to set the ALARM TIME.

2.Holding down either button changes the alarm time at high 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.

3.To deactivate the snooze alarm, slide the SNZ/ALARM ON/OFF switch to the OFF position.

Centigrade (ûC) or Fahrenheit (ûF) set

Press the ûC/ûF button to choose the Centigrade or Fahrenheit readout. Note that the outdoor

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 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.

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 main unit displayed a proper outdoor temperature & humidity in the past but now displays blank "-

-", the remote unit and main unit may have lost synchronization. If this occurs, press the RE-SYNC

button of the main unit. The main unit will attempt outdoor temperature reception for another 6 minutes

and reinitiate synchronization with the remote unit. If the outdoor temperature/humidity cannot be

received, check:

1.The distance of the main unit or remote unit should be at least 3-4 feet away from any interfering  

 sources such as computer monitors or TV sets.

2.Avoid placing the main unit 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

remote unit or the main unit, 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 remote unit to the main unit (in open space).

However, this depends on the surrounding environment and interference levels. The temperature signal

travels in a straight line from the remote unit to the main unit. The signal will not curve around blocking

object. If no reception is possible despite the observation of these factors, all system units have to be

reset (see Getting Started).

Interference

Signals from other household devices, such as entry controls, door bells and home security systems,

may temporarily interfere with the units 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.

M0xxM0xx

P.5

P.6

NO SIGNAL DETECTION

SIGNAL DETECTION

SUCCESSFUL RECEPTION

M0xxM0xx

Correct usage of the batteries

¥ Use 2 new "AA" batteries and 4 "AAA" batteries

¥ Do not mix standard and rechargeable batteries

¥ Do not mix new and old batteries

¥ When the low battery mark " " appears on the display, replace the all batteries with

 new ones.

Specification

Temperature measuring range

Main Unit :-50ûC to +70ûC with 0.1ûC resolution

   -58ûF to 158ûF with 0.2ûF resolution

Remote Unit :-50ûC to +70ûC with 0.1ûC resolution

   -58ûF to 158ûF with 0.2ûF resolution

Humidity measuring range

Main Unit :10% ~ 90%

Remote Unit :10% ~ 90%

Temperature and humidity checking interval

Main Unit :every 16 seconds

Remote Unit :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 )

Main Unit :4 "AAA" batteries, 1.5V batteries

Remote Unit :2 "AA" batteries, 1.5V batteries

Battery life :about 12 months

Dimension ( L x W x H )

Main Unit :195 x 90 x 65 mm

Remote Unit :104 x 70 x 24 mm

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.

Remote Unit

Check Remote Unit Temperature & Humidity

¥Temperature readout is set as default after power up. Press SELECT button to toggle between  

 temperature and humidity readout.

¥Press & hold for seconds will activate scroll mode which toggle between temperature & humidity  

 readout automatically. a scroll icon will show for indication.

¥Press & hold SELECT button another few seconds will dis-activate the scroll mode.

 The remote unit comes with a wall mount holder which can hold the unit on wall, or just place it on a 

 flat surface with the pull down stand.

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.

Trouble-Shooting / FAQ (Frequent Ask Questions)

¥Press the "Reset" button when the main unit 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 remote unit if the readout is irrelevant or does not respond.

There is no outdoor temperature shown on the unit?

A:Press the re-sync button and the main unit should show an outdoor temperature within minutes. If no temperature is shown, the  

 remote unit is either too far away or there is some interference between the remote and the main unit. Bring the remote unit to the  

 main unit and re-sync. There is also a reset button on the remote unit. Then move the remote unit to a new location closer and in  

 direct line with the main unit.

The weather outside is raining and the unit shows sunny?

A:The main unit measures barometric pressure changes and is showing that the weather will improve in the next six hours. It is set to 

show changes either up or down in trends and not what is going on at the exact time you view the icon.

The weather icon is incorrect for an extended period.

A:The unit may have been set during a period of high barometric pressure or low barometric pressure and is out of sync. Wait until a 

 partly cloudy day and reset the unit and it will acclimate to the correct level of pressure.

The outdoor temperature is reading 40ûC/105ûF when the temperature is in the 15ûC/60ûF.

A:The remote unit is in direct sunlight. Move it to a shaded protected area.

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.

P.8P.7

Inside or near concrete/ steel buildings

or structures, unless the clock is close/

next to a window (with curtain open).

Too close to household appliances

(Computer, TV, video/audios, fax

machines, speakers).

Near construction sites, traffic lights,

roadside, neon lights etc.

Inside moving vehicles (automobile, train, airplanes

etc) which radio transmission or electronics will

interfere the reception of radio-controlled clock.

Close to or on top of metal

surfaces / plates.

Next or close to power station.

Eastern

Standard

Time

Central

Standard

Time

Mountain

Standard

Time

Pacific

Standard

Time

Fort Collins

2000 miles

1200 miles