Datasheet

Note:
Should the total time of inserting the batteries into the transmitters take
longer than 2-1/2 minutes from the time of inserting the batteries into the
Temperature Station then temperature reception problems may occur. If
the temperature is not be received, then see Checking for 433 MHz
reception, before resetting the units (see Resetting the Temperature
Station below).
In the event of changing batteries in any of the units, all units need to be
reset by following the setting up procedures. This is because a random
security code is assigned by the transmitter at start-up and this code must
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