Symbol Explanation - VOLTCRAFT VC-890 Mode D'emploi

4. SYMBOL EXPLANATION

An exclamation mark in a triangle shows important notes in these operating instructions
that must be strictly observed.
The triangle containing a lightning symbol warns against danger of electric shock or
impairment of the electrical safety of the device.
The "arrow" symbol indicates that special advice and notes on operation are provided.
This device is CE-compliant and meets the necessary European directives.
Protection class 2 insulation (double or reinforced insulation)
Overvoltage category II for measurements on electric and electronic devices connected
CAT II to the mains supply with a mains plug. This category also covers all lower categories (e.g.
CAT I for measuring signal and control voltages).
Overvoltage category III for measuring in building installation (e.g. outlets or sub-
CAT III
distribution). This category also covers all lower categories (e.g. CAT II for measuring
electronic devices).
Overvoltage category IV for measuring at the source of the low-voltage installation (e.g.
CAT IV
main distribution, house-transfer points of energy providers, etc.) This category also
contains all lower categories.
Earth potential
50