Homematic IP HmIP-DRBLI4, Installation And Operating Manual

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Maintenance and cleaning
9 Maintenance and cleaning
The product does not require any maintenance.
Enlist the help of an expert to carry out any main-
tenance or repairs.
The mains voltage must be disconnected before
the device is removed (trip the miniature circuit-
breaker). Only qualified electricians (to VDE 0100)
are permitted to carry out work on the 230 V
mains.
Clean the device using a soft, lint-free cloth that is clean
and dry. Do not use any detergents containing solvents, as
they could corrode the plastic housing and label.
10 General information about radio
operation
Radio transmission is performed on a non-exclusive
transmission path, which means that there is a possibility
of interference occurring. Interference can also be
caused by switching operations, electrical motors or
defective 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