TFA Dostmann 30.3037.01.IT Mode D'emploi page 59

4. Neighbours using electrical devices operating on the 868MHz signal frequency
can also cause interference.
Note:
When the 868MHz signal is received correctly, do not re-open the battery cover of either
the transmitter or temperature station, as the batteries may spring free from the contacts
and force a false reset. Should this happen accidentally then reset all units (see Setting
up above) otherwise transmission problems may occur.
The transmission range is about 100 m from the transmitter to the temperature station (in
open space). However, this depends on the surrounding environment and interference
levels. If no reception is possible despite the observation of these factors, all system units
have to be reset (see Setting up).
POSITIONING THE TEMPERATURE STATION:
The temperature station may be hung onto wall easily or free standing.
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