Meade TE688W User manual

TE688W
Wireless Weather Forecaster with
Indoor/ Outdoor Temperature and Humidity
USER MANUAL

INTRODUCTION
Thank you for selecting a Meade Instruments Weather
Forecaster. This device combines precise time keeping,
monitoring and displaying of current temperature and humidity
data from up to three remote locations.
Meade Instruments is the world’s leading designer and
manufacturer of telescopes for professional and amateur
astronomers – famous for its innovative, high performance
telescopes at affordable prices. Meade Instruments now brings
that same passion for innovation and high performance to its
own line of precision, feature rich weather stations.
Please read this instruction manual so that you can get the most
enjoyment out of your Meade Instruments weather station.
In this package, you will find:
•One (1) main unit (receiver)
•One (1) remote sensor (transmitter)
•One (1) user manual
Please keep this manual handy as it contains practical
instructions, technical specifications and precautions.
2

INSTALLATION
Communication between the main unit (receiver) and the
remote sensor (transmitter) is wireless. This allows you to
greater flexibility in choosing the location of remote sensor. The
remote transmits data up to 100 feet (30 meters) over an open,
unobstructed area.
The remote sensor can be located either indoors or outdoors,
allowing you chose where your data is obtained.
NOTE:
•It is critical to power the remote sensor BEFORE setting up
the main unit.
•It is critical to power up and test communication between the
remote sensor and the main unit BEFORE permanently
mounting if outside.
BEFORE YOU BEGIN
•We recommend using alkaline batteries for the remote sensor
and the main unit. If outdoor temperatures regularly fall below
32°F (0°C), we recommend using lithium batteries.
•Avoid using rechargeable batteries. (Rechargeable batteries
cannot maintain correct power requirements.)
• ALWAYS install batteries in the remote sensor before the
main unit.
•Insert batteries before first use, matching the polarity in the
battery compartment.
•Press RESET after each battery change with a paper clip or
similar tool.
•During initial set up, place the remote sensor close to the main
unit.
•After reception is established (remote readings will appear on
the main unit’s display), position the remote sensor and the
main unit within the effective transmission range of up to 100
feet (30 meters).
•The main unit must be placed indoors.
NOTE:
•Avoid pressing any buttons on the main unit before the remote
readings are displayed.
•Transmission or reception range may be affected by trees,
metal structures, electronic appliances, surrounding building
materials and how the main unit and transmitter are positioned.
•Place the remote sensor so that it faces the main unit (receiver),
minimizing obstructions such as doors, walls and furniture.
3

•Though the remote sensors are weather-resistant, they should
be placed away from direct sunlight, rain or snow. The optimal
location for the remote sensor outdoors is under the eaves on
the north side of the building.
REMOTE TEMPERATURE AND HUMIDITY SENSOR
(TS23C)
FEATURES
•Remote data transmission to the main unit via 433 MHz
frequency
•Three transmission channels
•Case can be wall mounted using built-in hanger
A. LED INDICATOR
•Flashes once about every 45 seconds with each transmission to
the main unit.
•Flashes twice when battery power is low.
B. BATTERY COMPARTMENT
•Holds two AA-size batteries
C. RESET
•Resets all previous settings
D. CHANNEL SWITCH
•Selects the desired channel: 1, 2 or 3
E. WALL-MOUNT RECESSED OPENING
•Mounts the remote sensor on the wall
4

BATTERY INSTALLATION
NOTE: When the temperature falls below freezing point
32°F (0°C), battery voltage will drop which may result in
reduced the transmission range. For optimum
performance in cold weather conditions, we recommend
using lithium batteries.
NOTE: Install the batteries and select the channel before
mounting the remote sensor.
•Remove the screws from the battery compartment with a small
Phillips screwdriver (not included).
•Set the channel 1 through 3. The switch is located in the battery
compartment. Channel 1 is typically selected if only one remote
sensor is being used.
•Install 2 “AA” size alkaline batteries (not included) matching
the polarities shown in the battery compartment.
•Replace the battery compartment door and secure the screws.
•Secure the remote sensor in the desired location.
MOUNTING
•The remote sensor can be mounted either horizontally or
vertically.
•Use a screw, rather than a nail, to securely mount the sensor.
•When mounting the main unit on a vertical surface, fold the
built-in table stand back into the unit, allowing the main unit to
lie flush with the surface.
PLACEMENT
•The remote sensor should be placed under eaves or a similar
location with free air circulation sheltered from direct sunlight
and extreme weather.
•Ideally, place the remote sensor over soil, rather than asphalt
which would cause false readings.
•Avoid placing the remote sensor near sources of heat, such as
chimneys and heating elements
•Avoid areas that collect heat from the sun and radiate heat,
such as metal, brick or concrete structures, paving, and patios
•The international standard for the valid air temperature
measurements is 4 feet (1.25meters) above the ground
OPERATION
Immediately after batteries are installed, the remote sensor will
start transmitting a temperature and humidity data to the main
unit.
5

MAIN UNIT
The main unit measures indoor temperature and humidity
readings and temperature and humidity from up to three remote
sensors location (outside or inside). Its clock receives atomic
time data from the US WWVB Atomic Clock.
FEATURES
TIME
•Precise time and date set via signals from the US Atomic clock
•12 or 24 hour time format
•Manual adjustment of time and date
•Calendar date with month and day in 7 languages English,
German, French, Italian, Spanish, Dutch and Swedish
•Dual crescendo alarms with snooze
•Programmable ice warning alarm
WEATHER
•Weather forecast for the next 12 to 24 hour in seven large
icons: sunny, slightly cloudy, cloudy, rainy, heavy rainy,
snowy and heavy snowy.
•Programmable minimum/maximum temperature alarm
•Indoor/outdoor temperature and humidity in up to 3 remote
locations (additional sensors required)
•Barometric pressure in imperial or metric units
•Altitude adjustment for pressure compensation
•24 hour barometric pressure history chart
•Comfort level indicators (Dry, Humid, etc)
6

J
E
F
D
G
I
H
A
B
C
K
L
7

A. WEATHER FORECAST/ PRESSURE window
B. TEMPERATURE/ HUMIDITY window
C. CLOCK window
D. DOWN (? ) button
•Select the next available mode
•Press and hold for 2 seconds to search for wireless signal from
remote sensor.
•Decrease parameters.
E. ALARM button
•When time mode has been selected, press once to display the
alarm time of weekday alarm ( ), single alarm ( ) and
pre-alarm ( ).
•Hold for 2 seconds, set weekday, single or pre-alarm’s alarm
time.
•When temperature mode has been selected, press once to
display the highest or lowest temperature alarm’s value.
•Hold for 2 seconds, set the highest or lowest temperature
alarm’s value.
•When alarm is on, press once to stop the alarm temporarily.
F. CHANNEL button
•Press to display the outdoor temperature readings of Channels
1, 2 or 3.
•Hold for 2 seconds, enter into the circulation mode and outdoor
temperature readings of Channels 1, 2 or 3 will be displayed
automatically in every 5 seconds.
G. MODE button
•When pressure mode has been selected, press once to display
the local pressure, altitude and sea level.
•Press and hold for 2 seconds to set altitude and sea level.
•When time mode has been selected, press once to toggle
between time with seconds display or time with weekday
display.
•Press and hold for 2 seconds, set language of the day of the
week, year digit, month digit, date digit, hour format (12/ 24
hours), hour digit and minute digit. (Note: calendar format is
default in month-date display)
•When temperature mode has been selected, press and hold for
2 seconds to toggle the temperature unit between Celsius or
Fahrenheit.
8

H. UP (? ) button
•Press to select the next available mode
•Increase the parameters
•In time with seconds display mode, press and hold for 2
seconds to activate/ deactivate radio controlled time signal
search manually.
•In time with weekday display mode, press and hold for 2
seconds to switch time zone from Pacific, Mountain, Central to
Eastern.
I. MEM/ HISTORY button
•When temperature mode has been selected, press to recall the
minimum or maximum temperature and humidity readings of
main and remote units.
•Press and hold for 2 seconds, collected memories will be
cleared.
•When pressure mode has been selected, press once to check the
historical pressure data for the past 24 hours.
J. WALL- MOUNT hole
•A recessed opening to mount the unit on a wall
K. BATTERY COMPARTMENT
•Requires two (2) UM-3 or AA 1.5V alkaline batteries
L. TABLE STAND
BATTERY INSTALLATION
•Remove the battery door located at the back of the main unit.
•Insert two (2) AA size batteries according to the polarities
shown and replace the battery compartment door.
•When placing the main unit on the table or other horizontal
surface, unfold and adjust the table stand for the desired
viewing angle.
PLACEMENT
•Make sure that the main unit is locating within the operating
range of all remote sensors.
•Ideally the main unit should be placed within line of sight of
remote sensors. Avoid placing the main unit where surfaces
emitting and radiating heat (e.g. heating ducts or air
conditioners) and areas with interference from wireless devices
(e.g. cordless phones, radio headsets, baby monitoring devices
and other electronics).
9

OPERATION
Once the main unit is powered, the display will show all
available LCD segments for a moment.
IMPORTANT: All of the display functions will be locked,
allowing setting of your local altitude and pressure parameters
by pressing the UP (? ) or DOWN (? ) and MODE buttons.
The locked display will show the pressure icon and abbreviation
“inHg” flashing in the Weather Forecast/ Pressure Window,
default time in Clock Window and channel 1’s temperature and
humidity readings in Temperature/ Humidity Window.
If pressure and altitude are not configured during this time, the
unit will self-calibrate in a few minutes and show the default
settings for the pressure and altitude (sea level) and all remote
weather sensors readings.
GETTING STARTED
WEATHER FORECAST
This unit is capable of detecting the atmospheric pressure
changes. Based on collected weather data, it forecasts the
weather for the next 12 to 24 hours.
When the
display
shows...
Forecast is... Sunny Cloudy Rainy Heavy
Rainy Snowy Heavy
Snowy
Partly
Cloudy
NOTE: The weather forecast accuracy is approximately 70%.
The main unit display shows forecasted (predicted) not
current conditions. The SUNNY icon indicates clear weather,
even when displayed during the nighttime.
PRESSURE OPERATION
The pressure window displays: current barometric pressure, sea
level pressure, and weather forecast. The information contains a
number of historical statistics: pressure/ temperature/ humidity
history bar-chart for the past 24 hours
Pressure can be measured in inHg, hPa/mBar or mmHg, and
altitude is determined in either meters or feet.
IMPORTANT: There are three viewing options available:
barometric pressure SEA LEVEL or LOCAL and ALTITUDE.
Local pressure is a measured value (can’t be adjusted) while
Sea Level & Altitude are variables that you can enter. It is
advisable to select and program only one of the variables and to
allow the unit to calculate the third value.
01

The unit is designed to measure pressure changes at your
specific location, when LOCAL barometric pressure is selected.
Information for programming your unit, with either Altitude or
Sea Level values, may be obtained from GPS readings, online
from the Internet, etc.
SEA LEVEL barometric pressure provides you with
information about pressure changes at lower elevations in your
surrounding area. The SEA LEVEL pressure value can be set
to match your local metro area weather information. (Sources –
local TV or radio station, etc.)
SETTING INITIAL PRESSURE PARAMETERS
IMPORTANT: Allow the unit to set without touching ANY
buttons for about 6-8 minutes during the main unit initial set up.
This will give the unit time to synchronize with remotes,
stabilize pressure readings and settle with default settings.
SELECT PRESSURE UNITS OF MEASURE
Press UP (? ) or DOWN (? ),as needed, until the pressure icon
“PRESSURE”, to the left of the barometric pressure value,
begins to flash.
• Press MODE button, to toggle through selections until
“SEA LEVEL” or “LOCAL” barometric pressure is
displayed.
• Press and hold MEM/ HISTORY button to enter the pressure
unit selection mode. Press the UP (? ) or DOWN (? ) button
to select the preferred units of measure for pressure: inHG
(English), hPa/mBar (scientific) or mmHg (metric)
• Press MEM/ HISTORY to confirm your selection. Then press
MODE to move to the ALTITUDE unit selection mode. Press
the UP (? ) or DOWN (? ) button to select pressure unit as
FEET or METER.
• Press MEM/ HISTORY to confirm and hold MODE to move
to the ALTITUDE value selection mode.
• Press UP (? ) or DOWN (? ) to select or adjust the altitude
value to your location. (Press and hold either button for
accelerated digit advance)
• Press MODE to confirm the programming selection.
(NOTE: The unit will automatically exit programming mode
if it does not detect a button press after 2 minutes.)
11

VIEWING PRESSURE AND ALTITUDE INFORMATION
To view pressure or altitude information, press MODE button.
The display will alternate between the sea level pressure, local
pressure and local altitude screens.
PROGRAMMING SEA LEVEL PRESSURE (not required if
you did altitude)
•Press and hold MODE, until the barometric pressure digits are
flashing.
•Enter the desired sea level pressure value by pressing UP (? )
or DOWN (? ) buttons. (Press and hold either button for
accelerated digit advance.)
•Press MODE, to confirm sea level value selection.
CHANGING PRESSURE AND ALTITUDE UNITS
•Press MODE as needed, until “LOCAL” pressure is displayed.
•Press and hold MEM/ HISTORY, until the pressure unit is
flashing.
•Change local or sea level pressure units by pressing the
UP (? ) or DOWN (? ) buttons to select the pressure units.
Choose from: inHg, hPa/mBar or mmHg.
•Press MEM/ HISTORY to confirm your selection.
•Press MODE button until the local altitude value will be
displayed
•Press and hold MEM/ HISTORY until the altitude unit is
flashing.
•Select the ALTITUDE unit:, meters or feet, by pressing
UP (? ) or DOWN (? ) buttons.
•Press MEM/ HISTORY to confirm your selection.
VIEWING SEA LEVEL PRESSURE HISTORY
•In pressure mode, press MEM/ HISTORY button entering the
sea level pressure display.
•When the SEA LEVEL is displayed, press MEM/ HISTORY
repeatedly viewing the sea level pressure history for the past 24
hours in 1 hour intervals.
•If no buttons are pressed for 5 seconds, the unit will
automatically return to the default Pressure and Weather
Forecast Mode.
VIEWING PRESSURE, TEMPERATURE AND HUMIDITY
CHARTS
The bar chart in Pressure Window can be configured to display
a historical data for the sea level pressure and temperature or
humidity for channel 1.
21

After selecting the Pressure Window, press and hold ALARM
button to toggle the bar chart between the sea level pressure with
a word “PRESSURE” displayed at the right bottom corner of
the chart, temperature with a thermometer icon and “CH1” and
a humidity with “RH” icon and “CH1”.
MOON PHASE ICONS
New
Moon
Waning
Crescent
Waning
Crescent
First
Quarter
Waxing
Gibbous
Full
Moon
Waning
Gibbous
Last
Quarter
TEMPERATURE/ HUMIDITY WINDOW
The main unit supports up to 3 remote sensors, corresponding to
a separate channel of the temperature and relative humidity
display. The temperature can be displayed in Celsius (ºC) or
Fahrenheit (ºF).
The main unit carries the temperature and humidity sensor and
uses this data to calculate an indoors comfort level - Wet,
Comfort or Dry.
A temperature alert function is available for all channels. It can
be programmed to sound if the channel temperature exceeds or
falls below the pre-set upper and lower limits.
REMOTE SENSORS STATUS
The wave icon above the current channel icon shows the
connection status of the corresponding remote sensor:
Icon Status
Searching for the signals from the
remote sensor
Corresponding remote sensor signal
received successfully
No signals received for over 1 hour
SEARCH FOR REMOTE SENSORS
•The main unit can be manually activated to search for the
signals from remote sensors by pressing and holding DOWN
(? ) button.
31

OPERATION
•To select the indoor/ outdoor temperature and humidity mode,
press UP (? ) or DOWN (? ) until the IN icon flashing
with a beep sound alert.
VIEWING REMOTE (CHANNEL) TEMPERATURE AND
HUMIDITY
Static Display:
•Press the CHANNEL button to select measurements from
different remote sensors, each is set to a unique channel 1,
2 or 3.
Channel Auto-Scan Display:
•To enable an automatic scan of all channels, press and hold
CHANNEL, until the icon is displayed. The measurements
from each remote channel will be alternately displayed with a
5 seconds viewing.
NOTE: the channel auto-scan feature can be active only if there
are more than one remote sensors operating and are set to
different channels.
PROGRAMMING TEMPERATURE IN CELSIUS OR
FAHRENHEIT
•Press and hold MODE button for 3 seconds to toggle the
temperature unit in Celsius (ºC) or Fahrenheit (ºF).
SETTING TEMPERATURE ALARM
•Press down button to select temperature display.
•Press ALARM button selecting the desired alarm, the upper
temperature alert with icon (if disabled, displays OFF), or
lower temperature alert with icon (if disabled, displays
OFF).
•Press and hold ALARM button until the temperature digits
flashing.
•Adjust the temperature digits using the UP (? ) or DOWN
(? ). Press and hold either button for fast digits advance
•Press the ALARM to confirm selection and return to the
temperature alarm selection screen
ACTIVATING OR DEACTIVATING TEMPERATURE
ALARMS
•Once the above alerts are displayed, press the UP (? ) or
DOWN (? ) to enable or disable the corresponding alert.
41

VIEWING MAX/MIN AND MINIMUM READINNGS
Press the MEM/ HISTORY button recalling:
•Current temperature and humidity
•Minimum temperature and humidity
•Maximum temperature and humidity at the remote location.
RESETTING TEMPERATURE MEMORIES
Press and hold MEM/ HISTORY button for 3 seconds to clear
all channel memories.
COMFORT LEVEL INDICATION
The main unit is capable of detecting and displaying the current
indoor comfort levels of surrounding environment. The comfort
level based on the combination of the current indoor temperature
and humidity readings. The following comfort levels may be
displayed: COMFORT (comfortable); WET (wet) and DRY
(dry)
Indicator
displayed
Temperature
Range
Humidity
Range
Shows current
condition
Ideal relative humidity
and temperature
40%RH-
70%RH
20°C to 25°C
(68°F to 77°F)
COM
WET -5°C to 50°C
(23°F to122°F)
OVER
70%RH
Contains excess
moisture
DRY 5°C to 50°C
(23°F to122°F)
BELOW
40%RH
Contains inadequate
moisture
CLOCK WINDOW
WWVB RADIO CONTROLLED TIME
The NIST (National Institute of Standards and Technology)
radio station (WWVB) is located in Ft. Collins, Colorado. It
transmits an exact time signal continuously throughout the most
of the continental United States at 60 KHz frequency. The main
unit can receive this WWVB signal through the internal antenna
from up to 2,000 miles away. Due to the nature of the Earth’s
ionosphere, reception can be limited during the daylight hours.
The radio controlled clock will search for an alternate station that
receives the atomic time signal from the NIST Atomic clock in
Boulder, Colorado.
51

Icon Atomic Time Reception Strength
Undefined data
No Reception for the past 24 hours
Weak signal, but can be decoded
Strong signal
The WWVB tower icon on the unit’s display will flash
indicating a radio signal reception from the WWVB station. If
the tower icon is not fully lit, or if the time and date are not
set automatically, please consider the following:
•During nighttime hours, atmospheric disturbances are
typically less severe and radio signal reception may improve. A
single daily reception is sufficient enough to keep the clock
accuracy within 1 second.
•Make sure the unit is positioned at 8 feet (2 meters) distance
from any interference source such as a TV, computer monitor,
microwave, etc.
•Within concrete wall rooms such as basements or office
buildings, the received signal may be weakened. Always place
the main unit near the window for better reception.
Once the atomic time signal is received, the date and time will
be set automatically, and the [ ] icon will appear.
•The atomic clock receiver is programmed that it will search for
the atomic time signal daily for 0:00, 3:00, 6:00, and 12:00 am.
•To enable or disable the atomic time receiver, press and hold
UP (? ) button for 3 seconds. If atomic time reception is
activated, a tower icon will start flashing. If reception is
disabled, the tower icon will disappear.
•If the time signal has not been received in 8 minutes, you may
set the time manually.
MANUAL SETTINGS
To select the time mode, press UP (? ) or DOWN (? ) until the
IN icon flashing with a beep sound alert. It is necessary to
set the desired US TIME ZONE.
61

TIME ZONE
•Press MODE button once to select hour and minutes with the
day of the week display.
•Select the Time Zone by pressing and holding UP ( ? ) button
for 3 seconds
•Keep holding UP ( ? ) button until the desired US Time Zone
(Pacific, Mountain, Central or Eastern) is highlighted on the
display’s US map, located to the right of the time display and
above the day of the week
•Release the UP ( ? ) button. The Time Zone is set.
TIME AND CALENDER
•Press and hold MODE button until the day of week language
abbreviation “ ” will flash
•Press the UP (? ) or DOWN (? ) selecting the day of the week
in English, German, French, Italian, Spanish, Dutch or Swedish.
•After the language of weekday is set, press MODE button
to confirm and move to the next parameter (year)
•Continue setting the year, month, day, time format (12 or 24
hours), local hour and minutes, using the same technique
•After programming is complete the display will return to the
default hour and minutes with seconds display.
CLOCK ALARMS
There are two time alarms – Weekday alarm ( ) and Single
day alarm( ) - and one Ice Warning Alarm ( ).
•If Weekday ( ) alarm is activated, it will sound at the set
time and the alarm icon will flash Mondays through Fridays
•If Single ( ) day alarm is activated, it will sound at the set
time and the alarm icon will flash only for this specific day and
will not activate on subsequent days
•If Ice Warning Alarm ( ) is activated, it will sound
at the set time and alarm icon will flash once the remote
temperature for Channel One (1) will reach 32°F(0°C) and
below
NOTE: Ice Warning Alarm can be set only if Weekday
and/or the single alarm are programmed.
SETTING THE WEEKDAY ( ) AND SINGLE DAY ( )
ALARMS
•Press ALARM button once to enter into the alarms setting
mode. The default alarm is a Weekday alarm ( ). The
abbreviation “ ” with a letter “ ” next to it will be
displayed, if the alarm has not been set previously
•Press and hold ALARM button for two seconds. The hour digit
will flash 71

•Adjust the hour using UP ( ? ) or DOWN ( ? ) buttons
•Press ALARM button again. The minute digits will flash
•Adjust the minutes using UP (? ) or DOWN (? ) buttons
•Press ALARM button again to confirm and the weekday alarm
time will be set
•Set Single ( ) day alarm if desired in the same manner
SETTING THE ICE WARNING ALARM ( )
If Weekday ( ) or Single day ( ) alarm is MODE, the
Ice Warning Alarm (Pre-AL) can be programmed.
•Press ALARM button once to enter into the Ice Warning
Alarm setting mode. The abbreviation OFF with a PRE-AL
next to it will be displayed.
•Press and hold ALARM button for two seconds. The number
30 will flash, meaning that if selected, the alarm will sound 30
minutes earlier than the Weekday or Single alarm.
•Select the desired Ice Warning Alarm interval in 15 minutes
increments between 15 and 90 minutes, using UP (? ) or
DOWN (? )buttons
•Press ALARM button to confirm and exit from the alarm
setting mode.
ACTIVATING/ DEACTIVATING ALARMS
•Press ALARM button to enter into the desired alarm mode.
•Press UP ( ? ) to activate alarm and the corresponding icons
, or will be displayed.
•Press DOWN ( ? ) to deactivate alarm until “ ” is
displayed.
MAINTANANCE
CHANGING BATTERIES
•If the low battery indicator lights up, replace batteries in the
corresponding unit.
•Do not mix old and batteries.
CLEANING
The main unit and remote sensors housings can be cleaned with
a damp cloth. Small parts can be cleaned with a cotton tip or
pipe-cleaner. Never use abrasive or corrosive cleaning agents or
solvents. Do not immerse electronic components in water.
81

TROUBLESHOOTING
Check here before contacting customer service.
Issue Symptom Solution
Main unit US Atomic
Time signal is
not received
Place unit by the window and
keep it there overnight
Remote
sensor
Cannot locate
remote sensor
Cannot change
the channel
Data does not
match data on
the main unit
Check batteries
Check location
Press and hold DOWN ( ? ) button
on the main unit to search for the
signal form the remote sensor
Press “RESET” after setting the
channel
Initiate manual sensor search (Press
and hold DOWN ( ? ) button on the
main unit)
PRECAUTIONS
This product is engineered to give you years of satisfactory
service if handled carefully. Here are a few precautions:
•Do not immerse the units in water.
•Do not clean the units with abrasive or corrosive materials.
They may scratch the plastic parts and corrode the electronic
circuits.
•Do not subject the product to excessive force, shock, dust,
temperature, or humidity, which may result in malfunctions,
shorter lifespan, damaged batteries, and damaged parts.
•Do not tamper with the units internal components. Doing so
will invalidate the warranty and may cause damage. These units
contain no user-serviceable parts.
•Use only fresh batteries. Do not mix new and old batteries.
•Read the user’s manual thoroughly before operating the units.
91

SPECIFICATIONS
Main Unit
Indoor Temperature
Operating range: 23.0°F to 122.0°F (-5°C to +50°C)
Temperature resolution: 0.2°F (0.1°C)
User-selectable (°F or °C) temperature display
Humidity (Indoor)
Operating Range: 30% to 80%
Resolution: 1%
Accuracy: 7%
Sampling Interval: 10 seconds
Weather Forecast: in seven large icons: sunny, slightly cloudy,
cloudy, rainy, heavy rainy, snowy and heavy snowy.
Maximum number of remote sensors: 3 (one included)
Readings update interval: every 45 seconds
Low battery indicator
Clock
Precise atomic time
4 US Time Zones
12/24 hour time format
Crescendo 2 minutes alarm with 8 minutes snooze
Barometric Pressure
Measuring Range: 14.75 inHg to 32.44 inHg (500 Hpa to
1100Hpa); (374.5 mmHg to 823.8 mmHg)
Resolution: 0.003 inHg (0.1 Hpa, 0.08 mmHg)
Accuracy: 0.015 inHg (5 Hpa; 0.38 mmHg)
Sampling interval: 20 minutes
Altitude Compensation Range: -657 ft to 16404 ft (-200m to
+5000 m)
Remote Sensor
Remote Temperature
Operating range with alkaline batteries:
-4°F to + 158°F (-20°C to + 70°C)
Operating range with lithium batteries:
-38.8°F to +158°F (-38.8°C to + 70°C)
Temperature resolution: 0.1°C/0.2°F
Humidity (Outdoor)
Operating Range: 30% to 80%
Resolution: 1%
Accuracy: 7%
Sampling Interval: 10 seconds
Transmitting Interval: around 47 seconds
RF Transmission Frequency: 433 MHz
02