Silvercrest SDR 15 A1 Operating Instructions Manual page 8

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Fig. A
Fig. B
For EU mains adapters only:
Instruction
List
Protection class II
Electrical devices in protection class II are devic-
es that have double and/or reinforced insulation
throughout, and do not have the option of con-
necting a protective earth. The housing of an elec-
trical device in protection class II, with surround-
ing insulating material, might either form all of the
additional or reinforced insulation, or part of it.
Indoor use
Devices with this symbol are intended solely for
indoor use.
Polarity markings
In the case of devices with coaxial power con-
nectors, these symbols indicate the polarity of the
connector. There are two types of polarity: either
positive inside and negative outside (Fig. A), or
negative inside and positive outside (Fig. B).
Tested safety
Products that feature this symbol meet the require-
ments of the German Product Safety Act.
EN – 61