Instructions Relevant To The Radio Range - Eurochron EFRM 10 Bedienungsanleitung

11. InsTruCTIons relevanT To The radIo ranGe

ranges and disturbances
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The product works in the 433 MHz range which is also used by other radio services. This is
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why there may be a restrictive operation and range due to devices that work on the same or
a neighbouring frequency.
–
The actual attainable distance between transmitter (exterior unit) and receiver (base stati-
on) in normal operation is heavily dependent on installation site/place of installation and the
existing ambient conditions.
Normally, proper operation without problems with radio reception should be possible in eg,
a detached house.
Causes for reduced ranges:
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Any high frequency interferences
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Proximity to electrical/electronical devices (eg television)
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Any kind of housing and vegetation
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Conductive metal parts which are located near the units or within or near their transmission
path, e.g. heaters, metallized insulation glass windows, reinforced concrete ceilings etc.
–
Influence on the radiation pattern of antennas caused by the distance from the sender or
the receiver to conductive surfaces or objects (to human bodies or ground also)
–
Broadband interference in urban areas which reduces the signal-to-noise-ratio; the signal
will not be recognized due to this "noise"
–
Interference radiation resulting from insufficiently shielded electronics, e.g. turned on com-
puters or the like.
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