General Information About Radio Operation - HomeMatic HmIP-SWSD Mounting Instruction And Operating Manual

• A max. number of 52 function tests and one full-
alarm for 60 seconds may be performed per year.
• During the entire lifetime, one start-up procedure
and two range tests may be performed and the
device may be taught-in to a group once.
• The potential interference of other radio trans-
mitters in the 868/869 MHz range may not be
above 15 seconds per day.
• The operating ambient temperature of 5 to 30 °C
has to be maintained.
11 General information about radio
operation
Radio transmission is performed on a non-exclusive
transmission path, which means that there is a possibil-
ity of interference occurring. Interference can also be
caused by switching operations, electrical motors or de-
fective electrical devices.
The range of transmission within buildings can
differ greatly from that available in the open air.
Besides the transmitting power and the reception
characteristics of the receiver, environmental
factors such as humidity in the vicinity have an
important role to play, as do on-site structural/
screening conditions.

General information about radio operation

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