By analysing air pressure, humidity and outdoor
temperature, the unit can forecast weather
conditions and displays as below:
Note: Snowy condition can be forecast only if the
digital thermometer is used to monitor the
The main unit has an internal thermometer that
shows the current room temperature on the
right of the display indicated by "IN".
A separate digital
thermometer is included
which can remotely transmit
temperature information to
the main unit and shows on
the right of the display
indicated by "OUT".
To be able to forecast weather accurately, you
need to adjust an off-set value according to your
current altitude as air pressure changes with it.
Press ALTITUDE (in the battery compartment) to
select one of the off-set levels (00, 13, 25, 38, 50,
63) that matches with your location (see table
below). Your selected off-set level will show on
the right of the display temporarily.
Above sea level
Less than 100m (328ft)
500m (1640ft) or higher
Note: Since there is no previous
weather information when using the
unit for the first time, the display will show
cloudy only. The unit may take over one hour
to obtain sufficient information for weather
forecast as changes in air pressure is slow.
Install 2 "AAA" batteries (not included) in the
1. Unscrew at the battery compartment to open
2. Install two "AAA" batteries by referring to
the indications in the compartment.
3. Replace the battery compartment door of the
thermometer and secure closing with the
Once the main unit is plugged for power, it can
automatically synchronize with the digital
thermometer (with batteries installed) to show
the temperature. You do not need to do
However, if you find abnormal temperature
display on the main unit, you may synchronize
the temperature manually by following the steps
1. At the main unit:
press and hold ID (in the battery
compartment) until the temperature display "-
- -" on the right of the display starts scrolling.
2. At the digital thermometer: Unscrew at
the battery compartment to open the door.
Press and hold ID inside the battery
compartment until the antenna icon on the
display of the thermometer flashes.
Synchronization starts automatically and
should be finished within several seconds.
• When synchronization succeeds, the antenna
icon stops flashing and the synchronized
temperature shows on the main unit.
3. If synchronization fails (no temperature shows
on the main unit), perform step 2 again.
If synchronization still fails after several
attempts and the temperature display
"- - -" on the main unit stops scrolling and
starts to flash, you have to perform both steps
1 and 2 again.
Line Out Temperature Sensor
If you are going to install the thermometer
outdoor with extreme temperatures (below 14
C)), the use of line out temperature sensor
(included) is recommended to avoid battery
failure. Insert the sensor connector to the
receptor (below ID button) in the battery
compartment. The sensor wire should be
extended from battery compartment through the
hole at the lower left of the door.
The digital thermometer can be fixed on walls
with the included holder (screws not provided). If
you are placing it outdoor, ensure that it does not
get wet by rain and is not under direct sunlight.
If you are using the line out temperature sensor,
place the thermometer indoor and extend the
sensor wire outside the window.
Back view with battery compartment door
removed (batteries not included)
F - selects
scale shows on
ID - performs
Receptor for connecting
with the main unit.
the line out temperature
• The thermometer sends the latest
temperature information to the main unit
every 35 seconds. There may be delay on
the main unit to show the most updated
• When the outdoor temperature display is
flashing on the main unit, there may be no
signal receiving from the digital
thermometer. Please make sure the batteries
of the thermometer are not empty and the
thermometer is not placed too far from the
main unit and without obstacles between
• To reach stable temperature measurements
the unit should be operated minimum 2
• Both the main unit and thermometer will
show "LLL" if temperature is lower than
C) and will show "HHH" if it is
higher than 140
• In case you see abnormal temperature
display on the unit, you may want to reset
the thermometer by pressing RESET (in the
battery compartment) with a pin.