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2. Description of symbols
The triangle containing a lightning symbol warns of danger of an electric shock or of the impairment of the
electrical safety of the device.
An exclamation mark in a triangle indicates important notices in these operating instructions which have to
be observed under all circumstances!d.
The arrow symbol is used to indicate where specific hints and information on handling are given.
This product has been CE-tested and meets the necessary European guidelines.
Class 2 insulation (double or reinforced insulation)
CAT II
Overvoltage category II for measurements on electric and electronic devices connected to the mains sup-
ply with a power plug. This category also covers all smaller categories (e.g. CAT I for measuring signal and
control voltages).
CAT III
Overvoltage category III for measuring in building installation (e.g. outlets or sub-distribution). This category
also covers all smaller categories (e.g. CAT II for measuring electronic devices).
Ground potential
