Oregon JMR838WFA USER MANUAL

WEATHER FORECAST RF WALL CLOCK

WITH ROMO TE THERMOMETER

JMR838WFA

Instruction Manual

INTRODUCTION

Congratulations for purchase of the Weather Forecast RF Wall
Clock with Remote Thermometer (JMR838WFA).

The JMR838WFA is designed to receive RF signals generated by
the US Atomic Clock, one of the world's most accurate timekeepers.
Each time the JMR838WFA receives this signal, the current time
and date is synchronized with the US Atomic Clock.

the JMR838WFA also displays outdoor and indoor temperature
and uses barometric information to indicate weather forecasts
and atmospheric pressure trends.

Included in this package is a remote thermo-sensor. Place the
thermo-sensor in a sheltered outdoor location within a 30 meters
(100 feet) radius of the main unit and it will transmit outdoor
temperature readings to the JMR838WFA.

Other features include a daily crescendo alarm with an eight­minute snooze function and an extra-large LCD display.

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DESCRIPTION OF PARTS

A MAIN UNIT

A1 Extra-large liquid crystal display (LCD)

• Displays the time, date and weekday

• Alarm status, and alarm-set time

• Weather forecast and pressure trend

• In/outdoor temperatures in ºF

A2 [

] Radio-reception signal

Indicates the strength of RF signal reception

A3 [

] Alarm-on icon

Appears when the alarm is activated

A4 [

A5 [ ] Battery-low indicator

A6 [ ] Battery-low indicator (remote sensor)

A7 Trend indicator

A8 Weather-forecast icons

] Alarm icon

Appears when the alarm time is displayed

Apprears when the battery power is low

Apprears when the remote-sensor battery power is low

Indicates the trend of barometric pressure changes

Displays Weather forecasts as sunny, partly cloudy,
cloudy, rainy or snow

A9 [ ((

Activates the snooze function

A10 [

CLOCK

Toggles between “seconds” and “weekday” displays or
activates the calendar-clock setting mode

A11 [

Increases the value of a setting

A12 [

ALARM

Displays the alarm-time or sets the alarm time and status

A13 [

ZONE

Sequences through the 4 US time-zone choices of Pacific,
Mountain, Central and Eastern

1

SNOOZE

] button

] UP button

] button

] button

)) ] button

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A14 [

Alternates between indoor and outdoor temperature
displays and activates auto-search for thermo signal

A15 [

Resets the unit by returning all settings to their default
values

A16 Battery Compartment

Accommodates four UM4 or AAA-size batteries (included)

A17 Table Stand

For placing the unit on a flat surface

A18 Wall-Mount Hole

For mounting the unit on a wall

THERMO

RESET

] button

] Button

B REMOTE THERMO SENSOR

B1 LCD

Displays the current temperature monitored by the remote
unit

B2 LED indicator

Flashes when the remote unit transmits data to the main
display unit

B3 °C/°F slide switch

Selects between Centigrade (°C) and Fahrenheit (°F)

B4 [ ] Battery-low indicator

Appears when the battery power is low

B5 Reset button

Returns all settings to default values

B6 Battery compartment

Accommodates two UM-3 or AA size alkaline batteries
(included)

B7 Battery door
B8 Wall-mount holder

Use to mount remote sensor on a wall

B9 Removable table-stand

For standing the remote unit on a flat surface

BATTERY INSTALLATION AND REMOTE

THERMO-SENSOR SETUP

Follow this step-by-step procedure for installing batteries and
setting up the remote-sensor unit. Successful setup should ensure
that temperature signals are properly received.

Note: The effective range may be limited by building
materials and the position of either the main unit or the
remote thermo-sensor unit. Try various set-up
arrangements for best result.

Setting up the thermo-sensor unit:

1. Position the remote sensor within the signal transmission
range of the main display unit. The maximum transmission
range is 100 feet (30 metres).

2. Remove the screws of the battery door on the remote thermo­sensor unit.

3. Select display of temperature in either °C or °F using the
°C/°F slide switch.

4. Install into the thermo-sensor unit, two UM-3 or “AA” size

1.5V alkaline batteries strictly according to the polarities
shown.

5. Replace the battery compartment door and secure its screws.

Note: Though the sensor is splash proof and is meant for
use outside, it should be placed away from direct sunlight,
rain, or snow.

Once the batteries have been inserted into the remote thermo­sensor unit, batteries can now be inserted into the main unit.

The JMR838WFA (main unit) requires four UM4 or “AAA” size
batteries for operation.

How to insert batteries into the main unit:

1. Press the door tab and click-open the door.

2. Insert the batteries strictly according to the polarities shown
therein.

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3. Replace the door so that it clicks into place.

Note: If not disposed of properly, batteries can be
harmful. Protect the environment by taking
exhausted batteries to authorized disposal stations.

Note: [
Replace the batteries when the battery-low indicator lights

] Battery-low indicator

up.

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Note: When the JMR838WFA is new and just out of the box,
initial signal reception can take up to 72 hours. It is
recommended that the JMR838WFA be placed on a window
sill away from a TV, PC, radio, microwave or other
equipment that generates RF signals. Interference to signal
reception is lowest between midnight and 4AM.

“SECONDS” AND “WEEKDAY” DISPLAY

The “second” and the “weekday” share the same section of the
display.

“weekday” display

ABOUT RADIO RECEPTION

The JMR838WFA is a radio frequency (RF) controlled clock. It
will automatically synchronize current time and date with the US
Atomic Clock. The benefit of a RF controlled clock is that highly­accurate time is maintained and manual adjustments to the time
and date are not required.

When the batteries are first installed, the JMR838WFA will
automatically search for a radio signal.

When in search mode, the antenna icon [
process takes between two to ten minutes. After initial search,
short periodic reception-signal scans will commence several
times a day.

The antenna icon indicates the strength of reception.

Interference

Reception can be affected by a number of factors. For best reception,
place the device away from metal objects and electrical appliances.

] will blink. This

STRONG

WEAK

NO RECEPTION

RECEIVING

“second” display

The weekday is displayed as an abbreviation in 3 languages.

Language

English

French

Spanish

Monday Tuesday Wed. Thursday Friday Saturda y Sunday

Day-of-the-week

To change the “seconds” display to the “weekday” display:

1. When the “seconds” are displayed, press CLOCK once.

To change the “weekday” display to the “seconds” display:

1. When the “weekday” is displayed, press CLOCK once.

CALENDAR AND ALARM TIME DISPLAY

The calendar and the alarm-time share the same section of the
display.

The calendar is displayed in a month-day format.

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