Datasheet

temperature readings of transmitter 1, 2, and 3, simply press the
“SET/CH” key. If the reading is from transmitter 1, then the identification
numbers 1 will be displayed in the outdoor temperature section of the
LCD. The same will apply to the next transmitter and so on. However, if
only one transmitter is used, no identification number will be displayed on
the LCD.
CHECKING FOR 433 MHz RECEPTION:
In normal surroundings (for example away from interfering sources such
as TV sets), the outdoor temperature can usually be easily received within
2-1/2 minutes. If the outdoor temperature is not displayed on the LCD after
2-1/2 minutes, then check the following:
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