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6

GB

REMOTE THERMO SENSOR

This sensor comes with a wall-mount holder and a removable
stand.  Use either to hold the unit in place.

Wall-mount

Table Stand

MAINTENANCE

The JMR838WFA will give you many years of service if treated
properly.  Please follow these care instructions:

1. Do not immerse the unit in water. If the unit comes in contact

with water, dry it immediately with a soft lint-free cloth.

2. Do not clean the unit with abrasive or corrosive materials.

Abrasive cleaning agents may scratch the plastic parts and
corrode the electronic circuit.

3. Do not subject the unit to excessive: force, shock, dust,

temperature, or humidity. Such treatment may result in
malfunction, a shorter electronic life span, damaged batteries,
or distorted parts.

4. Do not tamper with the unit’s internal components. Doing so

will terminate the unit’s warranty and may cause damage. The
unit contains no user-serviceable parts.

5. Only use new batteries as specified in this instruction manual.

Do not mix new and old batteries as the old batteries may leak.
Batteries contain dangerous chemicals and may explode or
leak and cause injuries if old and new batteries are used
together, are inserted improperly or are improperly disposed
of.  Always use caution when using or disposing of batteries.

6. Read this instruction manual thoroughly before operating

the unit.

SPECIFICATIONS

MAIN UNIT

Clock Functions

Radio Control

: Auto synchronization of

current time and date with the
US Atomic Clock

Calendar

: Weekday in English / Spanish /

French
Current month / day format

Clock Time

: 12-hour  format

Alarm Duration

: 2-minute  crescendo

Snooze

: 8  minutes

Accuracy

: +/- 0.5 second/day

( In manual set quartz clock mode)

General specification

Battery Type

: Four pieces of UM4 or “AAA” size

1.5V alkaline battery

LCD Dimension

: Viewing area - 155 x 107 mm

6.2" x 4.28"

Unit Dimension

: 267 x 204 x 36 mm

10.68" x 8.16" x 1.44"
(H x W x D)

Unit Weight

: Approx. 660 g (23.1 ounces)

(not including batteries)

Temperature Measurement

Operating Temperature

: -5°C to 50°C (23.0°F to 122°F)

Temperature Resolution : 0.1°C to (0.2°F)

REMOTE THERMO SENSOR

Proposed operating range : -20.0°C to +60.0°C

(-4.0°F to 140.0°F)

Temperature  resolution

: 0.1°C  (0.2°F)

RF Transmission

: 433 MHz

   Frequency

RF Transmission Range

: Maximum 30 meters (100 feet)

Temperature sensing

: Approximately 30 seconds

   cycle

Power

: Two pieces of UM-3 or “AA” size

1.5V alkaline battery

Weight

: 100gm (3.5 ounces)

(without batteries)

Dimension

: 105 x 70 x 22  mm

4.2" x 2.8" x 0.88"
(H x W x D)

Summary of Contents for JMR838WFA

Page 1: ...al display LCD Displays the time date and weekday Alarm status and alarm set time Weather forecast and pressure trend In outdoor temperatures in F A2 Radio reception signal Indicates the strength of R...

Page 2: ...d 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 eith...

Page 3: ...G WEAK NORECEPTION RECEIVING Interference Reception can be affected by a number of factors For best reception place the device away from metal objects and electrical appliances Note When the JMR838WFA...

Page 4: ...rm display share the same section of the display To set the alarm time 1 Press and hold ALARM for two seconds the alarm time will flash 2 Press to enter a value for the hour digits To confirm press AL...

Page 5: ...ith obstacles and interference Shorten the distance or reposition the remote sensor or the main unit HOW TO READ THE PRESSURE TREND The JMR838WFA gives a barometric pressure trend for the last hour As...

Page 6: ...new batteries are used together are inserted improperly or are improperly disposed of Always use caution when using or disposing of batteries 6 Read this instruction manual thoroughly before operating...

Page 7: ...eparation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that of the receiver which the receiver is needed Consult the dealer of an experienced rad...

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