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5 Description of symbols
The symbol warns of hazards that can lead to personal injury.
The symbol warns of dangerous voltage that can lead to personal injury
by electric shock.
The arrow symbol indicates special information and advice on how to
use the product.
This product has been CE tested and complies with the necessary na-
tional and European regulations.
This device is UK conformity assessed and meets applicable Great Brit-
ain directives.
Protection class 2 (double or reinforced insulation, protective insulation)
CAT II
It is applicable to test and measuring circuits connected directly to utiliza-
tion points (socket outlets and similar points) of the low-voltage MAINS
installation.
CAT III
It is applicable to test and measuring circuits connected to the distribution
part of the building’s low-voltage MAINS installation.
CAT IV
Measurement Category IV: For measuring at the origin of a low-voltage
installation (e.g. mains distribution, electricity provider’s transfer points to
homes) and outdoors (e.g. when conducting tasks on underground ca-
bles or overhead lines). This category also includes all lower categories.
Measuring in CAT IV is only permitted with test prods with a maximum
free contact length of 4 mm or with cover caps over the test prods.
Earth potential
Direct current
Alternating current
