Oregon Scientific RMR-136HG User manual

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Multi-Channel Indoor-Ooutdoor
Thermohygrometer with
Cable FreeTM Sensor & ExactSetTM Clock
MODEL: RMR-136HG
INTRODUCTION
Thankyoufor purchasingtheRMR-136HGMulti-ChannelIndoor-
Outdoor Thermohygrometer with Cable FreeTM sensor, model
THGR268, and ExactSetTM calendar clock.
This basic configuration consists of the main unit that is the
temperature and calendar clock station, and the thermohygrometer
sensor remote unit. The main unit can support up to 3 remote
sensors. Additional remote sensors are available.
The main unit has a large easy-read LCD screen that displays the
indoor temperature, clock with calendar, and temperature and
humidity data transmitted by the remote sensor to the main unit.
The RMR-136HG also records the maximum and minimum
indoor temperatures, and the maximum and minimum
temperatures/humidity data transmitted from the remote sensor.
The clock is a radio-controlled ExactSetTM clock and includes a
calendar. The clock automatically synchronizes time and date with
radio signalsreceived from the USAtomic Clock, one ofthe world’s
most accurate timepieces. Other clock/calendar features include
three-language choice for day-of-the-week display, a four-step
crescendo alarm and easy-change display modes. (To learn more
aboutthe USAtomicClockvisittheUS Department of Commerce's
National Institute of Standards and Technology website at:
www.nist.gov.)
MAIN UNIT FEATURES
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RMR136HGRemoteTherm-Hygro
Tested To Comply
With FCC Standards
FOR HOME OR OFFICE USE
Model No. RMR136HG
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A. THREE-LINE LCD DISPLAY
Easy-read LCD display of remote sensor and indoor
temperature-humidity data and calendar clock functions
B. [ ] BATTERY-LOW ICON
Indicates that the remote sensor or main unit battery power is
low and that batteries need replacement
C. [ ] USATOMIC CLOCK SIGNAL RECEPTION ICON
Graphically displays the radio signal reception strength
D. [CHANNEL] BUTTON
Sequences through and displays indoor and remote sensor
channel data
E. [SET/MODE] BUTTON
Switches between display modes and saves user-selected
settings
F. [DAILY ((.))] BUTTON
Sets the time for the alarm
G. [MEMORY] BUTTON
- Displays the maximum or minimum temperature and humidity
readings
- Clears the stored maximum and minimum temperature and
humidity data from remote sensor and the main unit
H. [((•))]ALARM ICON
Indicates that the alarm time is displayed
I. [ ]ALARM-ON ICON
Is displayed when the alarm is activate
J. WALL-MOUNT RECESS
For mounting the unit on a wall
TEMPERATURE & RELATIVE HUMIDITY ALARM :
K. [ ▲ ] BUTTON
Sets the remote sensor alarm values of minimum and
maximum temperatures and humidity range
L. [HIGH/LOW] BUTTON
- Displays the maximum and minimum temperatures and
humidity remote sensor alarms
-Saves alarm settings
M. [ALARM ON/OFF] BUTTON
Activates or disables the remote sensor alarms
CLOCK :
N. [ ▲] BUTTON
Advances the value of a setting
O. [ALARM ON/OFF] BUTTON
Activates or disables the clock alarm
P. [ ZONE ] BUTTON
Selects the US time zone
Q. [RESET] BUTTON
Returns all settings to their original default values
R. BATTERY COMPARTMENT
Accommodates twoAA (UM-3) size batteries (included)
S. REMOVABLE TABLE STAND
For standing the main unit on a flat surface

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REMOTE THERMOHYGROMETER
SENSOR
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A. TWO-LINE LCD
Displays the current temperature and humidity data measured
by the remote sensor
B. LED INDICATOR
Flashes when the remote sensor transmits a reading to the main
unit
C. °C/°F SLIDE SWITCH
Select between degrees displayed in either Centigrade (°C) or
Fahrenheit (°F)
D. CHANNEL SLIDE SWITCH
Assigns the channel number to the remote sensor
E. RESET
Returns all settings to their original default values
F. BATTERY COMPARTMENT
Accommodates two AA-size batteries (included)
G. BATTERY DOOR
H. WALL-MOUNT HOLDER
Supports the remote unit in wall-mounting
I. REMOVABLE TABLE STAND
For standing the remote unit on a flat surface
BEFORE YOU BEGIN
For best operation;
1. When using more than one remote sensor, assign a different
channel to each of the remote sensors.

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NOTE: Once a channel is assigned to a remote sensor, it can only
be changed by removing and then reinserting the batteries or
resetting the remote sensor.
MAIN UNIT BATTERY INSTALLATION
To install / replace batteries:
1. Gently lift the tab on the battery compartment door and slide
to remove door.
2. Install the batteries strictly according to the polarities shown.
3. Press [RESET].
4. Replace the battery compartment door.
2. Insert batteries into the remote sensor BEFORE inserting
batteries into the main unit.
3. Press [RESET] on the main unit after installing the batteries.
Place the main unit close to the remote sensor as this will
expedite initial signal synchronization between the main unit
and the remote sensor.
4. Position the remote sensor within the effective transmission
range of 21 - 32 yards (20 - 30 meters) from the main unit.
See “Wireless Transmission” for important information about
wireless data transmission.
Note: Although the remote sensor has been designed for outdoor
use, do not place the remote sensor in direct sunlight, rain or snow.
REMOTE SENSOR BATTERY
INSTALLATION & CHANNEL SELECTION.
To install / replace batteries:
1. Remove the screws on the battery compartment.
2. Using the [CHANNEL] slide switch, select the channel
number of 1, 2 or 3 for that remote sensor.
3 The temperature can be displayed in either Celsius or
Fahrenheit. Slide the [°C/°F Slide Switch] to either “C” or
“F.”
4. Insert the batteries according to the polarities as shown.
5. Press [RESET].
6. Replace the battery compartment door and secure its screws.
RemoteTherm-Hygro
FOR HOME OR OFFICE USE
Model No. RMR136HG

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Remote unit
Wall-mount Table Stand
THE RESET BUTTON
Pressing [RESET] will clear all settings and cause them to return
to their original default values. Use a blunt stylus to hold down
the button.
GETTING STARTED
Once batteries are installed in the remote sensor unit, the sensor
will start transmitting data to the main unit in 40-second intervals.
The main unit will start to search for remote sensor signals
approximately 3 minutes after batteries are installed. Upon
successful reception, the remote sensor temperature data will be
displayed on the top line of the LCD screen and the respective
humidity reading on the third line. The main unit will
automatically update its readings every 40-second. The indoor
temperature is displayed on the second line of the LCD screen.
LOW BATTERY WARNING
The RMR-136HG features a low battery warning icon. This icon
will appear on the second line of the LCD screen when the main
unit batteries are low and need replacing. To determine low
battery status ofthe remote sensor, press [CHANNEL]tosequence
through the channels. When the remote sensor assigned to that
channel number has low batteries, the low battery warning icon
will be displayed.
HOW TO USE THE TABLE STAND
OR WALL MOUNTING
The main unit has a removable table stand, which when connected,
can support the unit on a flat surface. Or the stand can be removed
and unit can be wall mounted using the recessed hanging hole.
The remote unit also comes with a wall-mount holder and a
removable stand.
Main unit
Wall-mount Table Stand
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RemoteTherm-Hygro
Tested T
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WithFCCStandards
FORHOMEOROFFICEUSE
ModelNo.RMR136HG
CHANNEL
MEMORY
SET / MODE
DAILY
EXACTSETRADIOCONTROLLED
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If remote sensor signals are not received by the main unit, blanks
“ --- ” will be displayed on the LCD screen and the kinetic wave
icon will not be displayed for that remote sensor.
To trigger a remote sensor signal search:
• On the main unit, press and hold [CHANNEL] and
[MEMORY]at the same time for 2-seconds. The signal search
will take approximately 3-minutes.
The signal search will synchronize the signal transmission and
reception between the remote sensor and main unit.
Should there be discrepancies between the reading shown on the
main unit and that on the remote sensor repeat this step.
CHECKING THE REMOTE AND INDOOR
TEMPERATURE & HUMIDITY
The 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.
To display temperature / humidity readings:
• Press [CHANNEL] to sequence through the choices of
Indoor or remote sensor channel 1, 2 or 3.
If readings are not received from a remote sensor after 15 minutes,
blanks “ --- ” will be displayed on the main unit LCD screen until
readings are successfully received. Should this occur, check the
remote sensor to verify that it is still in position and that the correct
channel number has been selected. On the main unit then press
and hold [CHANNEL] and [MEMORY] at the same time for 2-
seconds to trigger a remote sensor signal 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 COMFORT-LEVEL ICONS
The comfort level is based on the recorded relative humidity. An
indicator will be displayed or show if the humidity level is
comfortable, wet or dry.
Kinetic-wave
Icon
Designated
Display Indoor
Display
Remote
Display
Channel One
Remote
Display
Channel Two
Remote
Display
Channel Three
Searching for signal
Signal search successful
No signal received

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TEMPERATURE AND HUMIDITY
TREND INDICATOR ICONS
The temperature-trend and humidity-trend indicator arrow icons
show the trends based on collected readings.
NOTE: If the temperature exceeds or fall below the temperature
measuring range of the main unit or the remote sensor the main
unit LCD screen display will show “HHH” or “LLL”. See
“Specifications” for the temperature measuring ranges.
REMOTE SENSOR SCANNING
The main unit can be set to automatically scan and display data
readings from the remote sensor as well as indoor readings. When
the remote-sensor mode is active, the main unit LCD scree will
display the readings from one channel for approximately 4-
seconds and then proceed to display the next channel data.
To activate the remote-sensor scanning mode:
• Press and hold [CHANNEL] for 2-seconds.
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. Press [CHANNEL] to select the channel to be checked.
2. Press [MEMORY] once to display the maximum (MAX)
temperature and then again to display the minimum (MIN)
temperature. The identifiers of “MAX” and “MIN” will be
displayed as appropriate.
To clear the memory:
• Press and hold [MEMORY] for 2-seconds.
After clearing the memory, the maximum and minimum
temperatures and humidity levels will be the same as current until
new data readings are recorded.
Humidity
Comfort-Level Comfortable Dry Wet
Arrow
Indicator
Temperature
Trend
Rising Steady Falling
Arrow
Indicator
Humidity
Trend
Rising Steady Falling

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3. Repeat steps 1 and 2 to set the maximum humidity setting and
the minimum 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 mode. The appropriate HI, LO or both indicators will
be displayed indicating the alarm status.
When the alarm activates the main unit LCD screen display will
automatically switch to channel-1 if in another remote sensor
channel mode and will flash. The alarm will sound for one minute
unless disabled.
Press any key to momentarily stop the alarm. The alarm will
automatically reactivate again if the limit continues to exceed the
set limits.
NOTE: Temperature Range:
The temperature range is from -58°F to 158°F (-50°C to 70°C).
When setting the limits for the first time, the low/minimum
limit will start at -58°F (-50°C) and the high/maximum limit
at 158°F (+70°C). After the initial setting, the high/low limits
will start from the temperatures as last selected.
NOTE: Humidity Range:
The humidity range is from 2% to 98%. When setting the lim
its for the first time, the low/minimum limit will start at 2%
and the high/ maximum limit at 98%.After the initial setting,
the limits will start from the humidity levels as last selected.
NOTE: Alarm Sounding:
If a set limit is exceeded a second time while the alarm is
sounding, the alarm will complete its first 1-minute cycle
before sounding for another 1-minute cycle indicating that a
limit has been surpassed a second time.
HOW TO USE CHANNEL-1
TEMPERATURE/HUMIDITY ALARM
Maximum and minimum temperature and humidity limits can be
set for remote sensor channel-1 so that an alarm sounds when the
user-selected limits are exceeded.
The maximum and minimum temperatures and humidity are
sequentially displayed by pressing [HIGH/LOW].
The High-Low displays are as follows:
Sequence Respective Display
Press [HI/LO] X 1 Displays the HIGH temperature
Press [HI/LO] X 2 Displays the HIGH humidity
Press [HI/LO] X 3
Displays LOW temperature
Press [HI/LO] X 4 Displays LOW humidity
To set the maximum or minimum temperatures or humidity
level alarms:
1. Press [HI/LO]. Remote sensor channel-1 will be displayed.
2. Press [ ▲ ] to set the temperature or humidity limits. Each
press will increase the setting in increments of one (1) degree
or humidity percentage. Press and hold [ ▲ ] for rapid-
scrolling increments of five (5) degrees or humidity
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TRANSMISSION INTERFERENCE
Signals from household devices, such as door bells, home
security systems and entry controls, may interfere with those
of the RMR-136HG and result in temporarily reception
failure. This is normal and will not affect the general
performance of the product. The transmission and reception
of temperature and humidity data readings will resume once
the interference ends.
The success of wireless data transmission may vary and is
directly related to where the remote sensor is placed and the
environmental factors of that location. Should there be
difficulty in data transmissions, verify:
1. The low battery warning icon is not displayed for either the
main unit or the remote sensor. Replace batteries as
necessary.
2. The remote sensor is within the effective transmission range
of 21 - 32 yards from the main unit.
3. That there are no obstacle (like a transmission tower) or
environmental reason (such as a steep hill) that is causing
the interference or blockage between the main unit and the
remote sensor.
If the difficulty continues, reposition the remote sensor to a
different location and/or closer to the main unit.
CALENDAR CLOCK DISPLAY MODES
The RMR136HG has two different time display modes:
To turn the alarm off:
1. While the alarm is sounding, press [HI/LO].
2. Then press [ALARM ON/OFF].
3. The alarm has now been disabled and will not sound again until
reactivated.
To temporarily deactivate a sounding alarm:
1. Press any button and the alarm will be temporarily deactivated.
The alarm will sound again when a set limit is exceeded.
INTERRUPTED SIGNALS
If the display for a particular remote sensor goes blank on the main
unit LCD screen, press [CHANNEL] and [MEMORY] on the main
unit at the same time for about 2-seconds to trigger a signal search
between the main unit and the remote sensor.
If the search does not reactive the signal reception, verify:
1. The remote sensor is still in position.
2. The low battery warning icon is not displayed for the main unit or
the remote sensor. Replace batteries as necessary.
3. The remote sensor is within the effective transmission range of 21
to 32 yards from the main unit, and that the transmission path is
clear of obstacles and interference. Shorten the distance if
necessary.
NOTE:When the temperature falls below freezing point, the batteries
in the remote sensor will freeze lowering the voltage supply
and the effective range.

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after 48 hours, remove the batteries, allow the unit to clear and
then reinsert the batteries. Once the RMR-136HG receives the
initial signal, updates are accomplished with greater ease.
IMPORTANT:Do not adjust the time zone untilAFTER the clock
has picked up the signal.
NOTE: SIGNAL STRENGTH
The RMR-136HG, like other radio frequency equipment, is most
effective when it is placed near a window. The RMR-136HG may
need to be moved or repositioned to receive a stronger signal. For
best reception, place the RMR-136HG away from metal objects
and electrical appliances to minimize interference.
On the bottom line of the LCD screen immediately to the left of
the time display, is an icon indicating the signal reception strength.
Please note that while the RMR-136HG is receiving a signal from
the US Atomic Clock, the “receiving” icon will flash; once the
signal reception is complete, the icon will stop flashing.
MODE 1: Local Time
Hour, Minute, Second, Month, Day
MODE 2: Local Time
Hour, Minute, Day-of-the-Week, Month, Day
Press [SET/MODE] switch between the two time display modes.
Note:When [24 hr OFF / ((.))] is pressed the bottom line of the
main unit LCD screen will display the alarm time.
EXACTSETTM CLOCK SIGNAL
RECEPTION
The split-second accuracy of the RMR-136HG is achieved through
its internal antenna that responds to a special 60kHz frequency
signal generated by the US Atomic Clock.
The RMR-136HG automatically activates its antenna upon
battery insertion and within 3 - 7 minutes should receive the US
Atomic Clock signal. Note that if the RMR-136HG is new allow
up to 72 hours for the unit to receive the initializing signal. The
strongest signal reception usually occurs between midnight and
4:00AM. However, if the RMR-136HG has not picked up a signal
- Strong Signal
- Weak Signal
- No Signal Reception
- Receiving Signal
Signal Strength Icons: