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2. Explanation of symbols
The lightening flash symbol in a triangle warns against he risk of an electric shock or interference with the
electrical safety of the device.
An exclamation mark in a triangle refers to important information in these operating instructions that must
be adhered to.
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 national and European regulations.
Protection class 2 (double or reinforced insulation).
CAT I
Measurement Category I: For measuring circuits of electrical and electronic equipment that is not directly
supplied with a mains voltage (e.g. battery-operated devices, safety extra-low voltage systems and signal/
control voltages).
CAT II
Measurement Category II: For measuring electrical and electronic devices that are directly supplied with a
mains voltage via a mains plug. This category also includes all lower categories (e.g. CAT I for measuring
signal and control voltages).
CAT III Measurement Category III: For measuring circuits of installations in buildings (e.g. mains sockets or sub-
distributions). This category also includes all lower categories (e.g. CAT II for measuring electrical devices).
Measuring in CAT III is only permitted with test probes with a maximum free contact length of 4 mm or with
cover caps over the probe tips.
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
cables or overhead lines). This category also includes all lower categories. Measuring in CAT IV is only
permitted with measuring probes with a maximum free contact length of 4 mm or with cover caps over the
probe tips.
Earth potential
3. Intended use
- Measuring and displaying electrical parameters in the range of measurement categories CAT IV to max. 600 V and
CAT III to max. 1000 V against ground potential, in accordance with EN 61010-1 and all lower categories.
- Measures direct and alternating voltages up to 1000 V
- Direct measurement of direct and alternating currents up to 10 A
- Indirect measurement of alternating current up to 3000 A (via optional clamp-on ammeter adapter)
- Frequency measuring up to 10 MHz