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2. Within 3 minutes of activating the Projection clock, place the batteries into the transmitter (see
“How to install and replace batteries in the Thermo-Hygro outdoor transmitter“).
3. After inserting the batteries into the transmitter, the Projection clock will start receiving data from
the transmitter. The outdoor temperature and humidity should then be displayed on the Projection
clock. If this does not happen after 15 minutes, the batteries will need to be removed from both
units and reset from step 1.
4. The Projection clock can take up to 3 remote transmitters. If you have purchased additional
transmitters, follow step 2 for all extra transmitters. However, ensure that you leave 10 seconds in
between the reception of the last transmitter and the set-up of the following transmitter. The
Projection clock will number the transmitters in the order of set-up, i.e. the first transmitter will
have the temperature and humidity displayed with the number 1 against it and so on.
5. Before all the transmitters are set up, there is a testing period, during which the display switches
quickly between all the received transmitters at random, according to which random transmission
it receives. Pressing any key will stop this process. The process also stops automatically if up to 3
transmitters are received or no keys are pressed for a few minutes.
6. Once the remote temperature and humidity have been received and displayed on the Projection
clock, the DCF-77 time code reception is automatically started. This takes typically between 3-5
minutes in good conditions. This time period is an excellent opportunity to locate the transmitter(s)
in suitable location(s) outdoors. In order to ensure sufficient 433 MHz transmission however, this
should under good conditions be no more than 100 meters from where the Projection clock will be
finally positioned (see notes on “Positioning the thermo-hygro transmitter” and “433 MHz
Reception”).
7. If after 10 minutes, the DCF time has not been received, use the SET key to manually enter a time
initially The clock will automatically attempt to receive the DCF time at each full hour. When this is
successful, the received time will override the manually set time. The date is also updated with the
