Oregon Scientific EMR812HGN User manual

MULTI-CHANNEL IN-OUT

CABLE FREE

THERMO-HYGROMETER

MODEL : EMR812HGN

USER’S MANUAL

INTRODUCTION

Congratulations on your purchase of the Multi-Channel In-Out

Thermometer/Hygrometer(EMR812HGN)witha433MHzcable-

free thermo-hygro sensor.

Enclosed with this package is one (1) main display unit and one (1)

cable-free remote thermo-hygro sensor unit.

The main unit has an extra-large multifunction 2-line LCD that

shows recordings for indoor and outdoor temperatures, humidity,

maximum and minimum recordings and trend indicators. The unit

supports up to three 433MHz remote thermo-sensors or thermo-

hygro sensors. A variety of additional sensors can be purchased

separately.

In addition to monitoring maximum and minimum temperature and

humidity readings, the unit also has an alarm that can be set to

activate once readings exceed a given variance.

No wire installation is required between the main and remote units.

AstheEMR812HGNoperatesat433MHz,itcanbeusedintheU.S.

and most places in Continental Europe.

FEATURES: MAIN UNIT

A Extra large two-line Liquid Crystal Display (LCD)

Multifunction display showing temperature and humidity,

max./min. memory, and trend indicators for the main unit and

remote sensors.

B CHANNEL button

-Selects among different channels

-Activates remote sensor scanning mode

C IN/REMOTE

-Selects between the main-unit display and a selected

remote unit

-Activates search mode

D MEM/CLEAR button

-Recalls the maximum or minimum temperature and

humidity readings

-Clears the maximum and minimum temperature and

humidity memory of remote sensor channels or the main

unit display

E HI/LO button

-Set the upper or lower temperature alarm limits of

individual channels

-Confirms alarm settings

Fbutton

Sets the readings for the upper or lower temperature and

humidity of individual channels

G AL ON/OFF button

Activates or deactivates alarm

H RESET

Returns all settings to default values and erases all memories

I°C/°F slide switch

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

J Battery compartment

Accommodates two AA-size batteries

K Retractable table stand

For standing the main unit on a flat surface

L Recessed Wall-mount hole

For mounting the main unit on a wall

FEATURES: REMOTE

THERMO-HYGRO SENSOR

A Two-line LCD

Displays the current temperature and humidity monitored by

the remote unit

B LED indicator

Flashes when the remote unit transmits a reading

C°C/°F slide switch

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

D Channel slide switch

Designates the remote unit Channel 1, Channel 2 or

Channel 3

E RESET

Returns all settings to default values

F Battery compartment

Accommodates two AAA-size batteries

G Battery door

H Wall-mountholder

Supports the remote unit in wall-mounting

I Removable table stand

For standing the remote unit on a flat surface

BEFORE YOU BEGIN

Toensure properfunctioning oftheEMR812HGN followthis setup

procedure.

For best operation:

1. Assign different channels to different remote units.

2. Insertbatteriesfor remote unitsbefore doing soforthe main unit

(see instructions for battery installation).

3. Place the main unit as close as possible next to the remote unit,

reset the main unit after installing batteries. This will ensure

easier synchronization between the transmission and reception

of signals.

4. Positiontheremoteunitandmainunitwithineffectivetransmission

range, which, in usual circumstances, is 20 to 30 meters.

Note that the effective range is vastly affected by the building

materialsandwherethemainandremoteunitsarepositioned.

Try various set-ups for best result.

Though the remote units are weather proof, they should be placed

away from direct sunlight, rain or snow.

BATTERY AND CHANNEL

INSTALLATION: REMOTE UNIT

The remote thermo-hygro sensor unit uses two (2) UM-4 or “AAA”

size alkaline batteries.

Follow these steps to install / replace batteries:

1. Remove the screws on the battery compartment.

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

3. Select the temperature display unit on the °C/°F slide switch.

4. Insert the batteries strictly according to the polarities shown

therein.

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

Replacethebatterieswhenthelow-batteryindicatoroftheparticular

channel lights up on the main unit. (Repeat the steps described in

section “BEFORE YOU BEGIN”)

Notethat once a channel isassignedtoa remote unit, you can

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

BATTERY INSTALLATION: MAIN UNIT

The main unit uses two (2) UM-3 or “AA” size alkaline batteries.

Follow these steps to install / replace batteries:

1. Slide open the battery compartment door.

2. Insert the batteries strictly according to the polarities shown

therein.

3. Replace the battery compartment door.

Replace the batteries when the low-battery indicator of the indoors

temperature lights up. (Repeat the steps described in section

“BEFORE YOU BEGIN”)

If not disposed of properly, batteries can be harmful.

Protect the environment by taking exhausted batteries

ot authorized disposal stations.

GETTING STARTED

Once batteries are placed in a given remote sensor unit, it will start

transmitting information at 40-second intervals.

Also, for approximately a 3-minute duration, the main unit will

automatically search for signals once batteries are installed. Upon

successful reception, the individual channel temperature reading

willbe displayedon thetopline andthe respective humidityreading

on the bottom line. The main unit will automatically update its

readings at about 40-second intervals.

If no signals are received, blanks “ --- ” will be displayed and the

kinetic wave icon will not show.

To force a signal search:

◊Press and hold IN/REMOTE for 2-seconds to enforce a

3-minute search.

Thisis usefulin synchronizingthetransmission andreception of the

remote and main units.

Repeat this step whenever you find discrepancies between the

reading shown on the main unit and that on the respective remote

unit.

HOW TO CHECK REMOTE AND

INDOORS TEMPERATURES

Display of readings from a remote sensor or the main unit is a one-

step procedure. The remote sensor channel or the main unit display

is indicated in a box under the kinetic-wave icon.

Kinetic-wave

Icon

Designated Indoor Remote Remote Remote

Display Display Display Display Display

Channel One Channel Two Channel Three

Todisplaytemperature/humidityreadingsfromthemainunit:

◊PressIN/REMOTEuntiladot isdisplayedin theboxunder the

kinetic-wave.

To display temperature / humidity readings from a remote

sensor:

◊PressCHANNELuntil theappropriateremotesensorchannelis

displayed in the box under the kinetic-wave.

Ifnoreadingsarereceivedformoneparticularchannelformorethan

15minutes, blanks “ ---”will be displayed until further readings are

successfully searched. Check the remote sensor to ensure that it is

secure and that the correct channel has been selected. Optionally,

press and hold IN/REMOTE for 2-seconds to enforce a search.

HOW TO READ

THE KINETIC-WAVE DISPLAY

The kinetic-wave display shows the signal-receiving status of the

main unit. There are three possible forms:

The unit is in searching mode.

Transmission data are securely

registered.

No signals.

THE COMFORT-LEVEL ICONS

The comfort level is based on the recorded relative humidity. An

indicatorwillbedisplayed otshowif thelevelis comfortable,wetor

dry.

TEMPERATURE AND HUMIDITY TREND

INDICATORS

Thetemperature-trendandhumidity-trendindicatorsshowthetrends

of collected readings. Arrows indicate a rising, steady or falling

trend.

Note:Ifthetemperaturegoesabove orbelow thetemperature

measuringrange ofthe main unitor the remoteunit (statedin

specification), the display will show “HHH” or “LLL”.

REMOTE SENSOR SCANNING

The unit can be set to automatically scan and display readings from

the remote sensors. When the remote-sensor mode is active, the

display will show the readings from one channel for about 4-second

and then proceed to the next channel display.

To activate the remote-sensor scanning mode:

◊Press and hold CHANNEL for 2-seconds.

Arrow

indicator

Temperature

Trend Steady FallingRising

Arrow

indicator

Humidity

Trend Steady FallingRising

Comfort-level

To deactivate the remote-sensor scanning mode:

◊Press any button.

MAXIMUM AND MINIMUM

TEMPERATURE AND HUMIDITY

The maximum and minimum recorded temperature and humidity

readings will automatically be stored in the memory.

To display the maximum and minimum display memory:

1. Select the channel to be checked.

2. PressMEM/CLEARoncetodisplaythemaximumtemperature

and again the minimum temperature. The respective indicators,

MAX or MIN will be displayed.

To clear the memory:

• Press and hold MEM/CLEAR for 2-seconds.

If you press MEM/CLEAR now, the maximum and minimum

temperatures will have the same values as the current ones until

different readings are recorded.

HOW TO USE CHANNEL-1

TEMPERATURE/HUMIDITY ALARM

Upper and lower temperature and humidity limits for channel-1 can

be set so that an alarm activates when the limits are exceeded.

Thehigh andlow temperatureandhumidity displaysareselected by

sequentially pressing HI/LO.

The high-low displays are as follows:

Sequence Respective Display

Pressing HI/LO once Enters HI temperature display

Pressing HI/LO twice Enters HI humidity display

Pressing HI/LO three times Enters LO temperature display

Pressing HI/LO a four time Enters LO humidity display

To set a high or low temperature or humidity alarm:

1. Press HI/LO, channel-1 will be displayed.

2. Press tosetthetemperatureorhumiditylimit.Eachpresswill

increaseincrements by onedegree or percentage.Pressand hold

the button for a rapid-scrolling sequence by increments of five.

Note:

The temperature range is from -50

C (-58

F) to +70

(158

F).

Ifthisisthefirsttimeyousetthelimits,thelowerlimitwillstart

from -50

C (-58

F) and the upper limit +70

C (158

F).

Otherwise, the reading will start from the temperature last

selected.

The humidity range is from 2% to 98%.

Ifthisisthefirsttimeyousetthelimits,thelowerlimitwillstart

from 2% and the upper limit 98% Otherwise, the reading will

start from the humidity last selected.

3. Repeat the steps to set the upper humidity setting and the lower

temperature and humidity settings.

4. When finished, press HI/LO to set another limit or wait

16-seconds and the unit will automatically return to the normal

display. The respective HI, LO or both indicators will light up

to signify the status of the alarm.

If in another channel other than channel one is selected, when the

alarm activates the display will switch to channel-1 and the display

will flash. If left untouched, the alarm will activate for a 1-minute.

Pressanykeytomomentarilystopthealarm.Thealarmwillactivate

again if the limit continues exceeds the set limit.

Note: If a second limit is passed while an alarm is active, the

firstalarm will complete its 1-minute cycle and the alarmwill

continue to activate for a second minute to indicate that a

second limit has been surpassed.

To disable an alarm:

1. Enter the setting mode by pressing HI/LO.

2. Then, press AL ON/OFF.

The alarm has been disabled and will not sound at the previously set

limit.

To disable a sounding alarm:

◊Press any button, the alarm sound will stop.

DISCONNECTED SIGNALS

If without obvious reasons the display for a particular channel goes

blank, press IN/REMOTE to enforce an immediate search.

If that fails, check:

1. The remote unit of that channel is still in place.

2. The batteries of both the remote unit and main unit. Replace as

necessary.

Notethat when the temperaturefallsbelow freezing point, the

batteries of outdoor units will freeze, lowering their voltage

supply and the effective range.

3. Thetransmissioniswithinrangeandpathisclearofobstaclesand

interference. Shorten the distance when necessary.

TRANSMISSION COLLISION

Signals from other household devices, such as door bells, home

security systems and entry controls, may interfere with those of this

product and cause temporarily reception failure. This is normal and

does not affect the general performance of the product. The

transmissionandreceptionoftemperaturereadingswillresumeonce

the interference recedes.

NOTE ON °C AND °F

Theunitoftemperaturedisplayisselectedonthe°C/°Fslideswitch.

Select °C for Centigrade or °F for Fahrenheit.

Note that the remote temperature display on the main unit is

dominated by the selection on the

F slide switch of the

main unit. Whatever the display units of the remote sensors

are, they will be automatically converted to the chosen one of

the main unit.

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

batterylevelofthemainunitwillbeshownontheindoortemperature

when it is running low.

HOW TO USE THE TABLE STAND OR

WALL MOUNTING

Themainunithasaretractabletablestand,whichwhenflippedopen,

can support the unit on a flat surface. Or you can flip close the stand

and mount the unit on a wall using the recessed screw hole.

As for the remote unit, it comes with a wall-mount holder and a

removable stand. Use either to hold the unit in place.

Main unit Wall-mount Table Stand

Remote unit Wall-mount Table Stand

THE RESET BUTTON

Thisbutton isonly usedwhen the unitis operatingin an unfavorable

way or malfunctioning. Use a blunt stylus to hold down the button.

All settings will return to their default values.

PRECAUTIONS

This product is engineered to give you years of satisfactory service

if you handle it carefully. Here are a few precautions:

1. Do not immerse the unit in water.

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

may scratch the plastic parts and corrode the electronic circuit.

3. Donotsubjecttheunittoexcessiveforce,shock,dust,temperature

orhumidity, which may result in malfunction,shorterelectronic

life span, damaged battery and distorted parts.

4. Donottamperwiththeunit’sinternalcomponents.Doingsowill

invalidate the warranty on the unit and may cause unnecessary

damage. The unit contains no user-serviceable parts.

5. Onlyuse fresh batteriesas specifiedinthe user’smanual. Do not

mix new and old batteries as the old ones may leak.

6. Always read the user’s manual thoroughly before operating the

unit.

SPECIFICATIONS

Main unit

Display temperature range : -50.0°C to 70.0°C

(-58.0°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 to ( 0.2°F)

Temperature compensation : -10.0°C to 60.0°C

(14.0°F to 140.0°F)

Relative Humidity : 25% RH to 90% RH

Operating range

Remote thermo-hygro unit

Display temperature range : -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 to ( 0.2°F)

Temperature compensation : -10.0°C to 60.0°C

(14.0°F to 140.0°F)

Relative Humidity : 25% RH to 90% RH

Operating range

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