Oregon Scientific MTR101 User manual

MINI REMOTE THERMOMETER

MODEL: MTR101

USER'S MANUAL

INTRODUCTION

CongratulationsonyourpurchasingtheMTR101MiniRemote

Thermometer.

The basic package comes with a main unit and a remote sensor.

The main unit can support up to three remote sensors.

The MTR101 is very easy to use. No wire installation is

required between the main unit and the remote units. As the

MTR101 operates at 433MHz, it can be used in the U.S. and

most places in Continental Europe.

MAIN FEATURES

A. OUTDOOR TEMPERATURE

Shows the temperature of the selected remote channel

B. INDOOR TEMPERATURE

Shows the temperature taken indoors

C. [CHANNEL] BUTTON

Selects among different channels

D. [MEM] BUTTON

Displays current, maximum and minimum temperatures

E. [CLEAR] BUTTON

Clears the memory for the indoor temperature and that for

the selected channel

°C

°F

RESET

F. RESET BUTTON

Returns all settings to default values

G. °C/°F SLIDE SWITCH

Selects between degrees Centigrade (C) and Fahrenheit

(F)

H. BATTERY COMPARTMENT

Accommodates two (2) UM-3 or “AA” size batteries

I. TABLE STAND

Rotates out to support the unit on a flat surface

J. WALL-MOUNT HOLE

For mounting the unit on a wall

MAIN FEATURES: REMOTE UNIT

A. LED INDICATOR

Flashes when the remote unit transmits a reading

B. CHANNEL SLIDE SWITCH

Designates the remote unit Channel 1, Channel 2 or

Channel 3

C. RESET BUTTON

Returns all settings to default values

D. BATTERY COMPARTMENT

Accommodates two AAA-size batteries

E. BATTERY DOOR

HINTS FOR BEST OPERATION

• Assign different channels to different remote units.

• Insert batteries for remote units before doing so for the

main unit.

• Set the main and remote units within range (20 to 30

meters).

• Try different set-ups for best transmission and reception.

• Position the remote units away from direct sunlight, rain

or snow.

BATTERYAND CHANNEL

INSTALLATION: REMOTE UNIT

1. Remove the screws on the battery compartment.

2. Select the channel number on the CHANNEL slide switch.

3. Install 2 alkaline batteries (UM-4 or “AAA” size 1.5V)

strictly according to the polarities shown.

4. Replace the battery compartment door and secure its

screws.

Note that once a channel is assigned to a remote unit, you can

only change it by removing the batteries or resetting the unit.

BATTERY INSTALLATION: MAIN UNIT

1. Slide open the battery compartment door.

2. Insert two AA-sized batteries.

3. Press RESET.

4. Replace the battery compartment door.

To start an automatic scan on all channels, press and hold

CHANNEL for two seconds. The main unit will scan from

one channel to another and back. The reading for individual

channel will be displayed for five seconds. Press any key to

end the automatic scan.

The MTR101 is capable of measuring temperatures within the

-50°C (-58°F) and +70°C (+158°F) range. If the temperature

goes above or below that, the display will show "HHH" or

"LLL".

MAXIMUM AND MINIMUM

TEMPERATURES

Themaximumandminimumrecordedindoortemperaturesand

those of each channel will be automatically stored in memory.

To display them,

1. Press [CHANNEL] to locate the desired channel.

2. Press[MEM] repeatedly to display the current, maximum

(MAX) and minimum (MIN) temperatures. The readings

of the indoor temperatures will also be displayed.

GETTING STARTED

Once batteries are in place for the remote units, they will start

transmitting samplings roughly at 30-second intervals.

The main unit will also start receiving once batteries are

installed. The temperature of the selected channel will be

displayed on the main display and the indoor temperature on

the secondary display.The main unit will automatically update

its readings at 30-second intervals.

If no signals are received, blanks will be displayed. Press

CHANNELandMEMsimultaneouslytoenforceanimmediate

search. This is useful in synchronizing the transmission and

reception of the remote and main units.

INDOOR AND OUTDOOR

TEMPERATURES

The indoor temperature is shown on the secondary display.

As for the remote sites or channels, press CHANNEL

repeatedly to go from one channel to another. The kinetic wave

display on the channel number indicates the reception of that

particular channel is in good order.

Kinetic-wave

Icon

Designated

Display

Remote

Display

Channel One

Remote

Display

Channel Two

Remote

Display

Channel Three

To clear the memory of a particular channel,

1. Press [CHANNEL] to locate the desired channel.

2. Press [CLEAR]. Note it will also erase the memory for

the indoor temperatures. If you press MEM now, the

maximum and minimum temperatures will have the same

values as the current ones until different readings are

recorded.

DISCONNECTED SIGNALS

If without obvious reasons the display for a particular channel

goes blank, press [CHANNEL] and [MEM] to enforce an

immediate search. If that fails, check if the remote unit of that

channel is still in place. Make sure the transmission is within

rangeandpathisclearofobstaclesandinterference.Noreading

will be shown if no remote unit is assigned to that channel.

LOW BATTERY WARNING

When it is time to replace batteries, the respective low-battery

indicator will show up when the respective channel is selected.

The battery level of the main unit will be shown on the indoor

temperature when it is running low.

HOW TO USE THE TABLE STAND

OR WALL MOUNTING

Turn the table stand knob out to place the main unit on a flat

surface. Or you can hide the stand and mount the unit on a

wall using the recessed hole.

As for the remote unit, use the providedVelcro ® tape to secure

it in place.

Main unit

Wall-mount Table Stand

Remote unit

Wall-mount

THE RESET BUTTON

The [RESET] button is used to enhance synchronization of

signals after battery replacement or when the unit is operating

in an unfavorable way or malfunctioning. Use a blunt stylus to

hold down the button. All settings will return to their default

values.

PRECAUTIONS

This unit is engineered to give you years of satisfactory service

if handled carefully.

1. Do not immerse the unit in water.

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

3. Do not subject the unit to snow or excessive force, shock,

dust, temperature or humidity.

4. Do not tamper with the unit's internal components.

5. Do not mix new and old batteries or batteries of different

specifications

SPECIFICATIONS

Temperature Measurement

Main unit

Indoor Temperature measurement

Displayed IN temperature range : -9.9°C to +70.0°C

(14.2°F to 158.0°F)

Proposed operating range : -5.0°C to +50.0°C

(23.0°F to 122.0°F)

Temperature resolution : 0.1°C (0.2°F)

Velcro ® tape

Remote Temperature measurement

Displayed OUT temperature range : -50.0°C to +70.0°C

(-58.0°Fto158.0°F)

Proposed operating range : -5.0°C to +50.0°C

(23.0°F to 122.0°F)

Temperature resolution : 0.1°C (0.2°F)

Remote unit

Displayed temperature : -50.0°C to +70.0°C

(-58.0°F to 158.0°F)

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 Frequency : 433 MHz

No. of Remote unit : Maximum of 3

RF Transmission Range : 30 meters

(open area)

Temperature sensing cycle : around 30 seconds

Power

Main unit : use 2 pcs UM-3

or”AA” 1.5V

alkaline battery

Remote sensing unit : use 2 pcs UM-4 or

“AAA” 1.5V

alkaline battery

Weight

Main unit : 76 gm (without

battery)

Remote sensing unit : 67 gm (without

battery)

Dimension

Main unit : 142(L) x 84(W) x

24.5(T) mm

Remote sensing unit : 92(L) x 60(W) x

21(T)

NOTE ON COMPLIANCE

This product complies with standards and specifications of

BZT, FCC and article number 334 of PTT.

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 grarantee that interference will not occur

inaparticularinstallation.Ifthisequipmentdoescauseharmful

interference to radio or television reception, which can be de-

termined 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:

1. Reorient or relocate the receiving antenna.

2. Increasetheseparation betweentheequipmentandreceiver.

3. Connect the equipment into an outlet on a circuit different

from that to which the receiver is needed.

4. Consult the dealer of an experienced radio/TV technician

for help.

CAUTION

- The content of this manual is subject to change

without further notice.

- Due to printing limitation, the displays shown in

this manual may differ from the actual display.

- The manufacturer and its suppliers held no

responsibility to you or any other claim arising

by using this product.

- The contents of this manual may not be

reproduced without the permission of the

manufacturer.

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