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• F or safety and licensing reasons, unauthorised conversion and/or modification of the device is not permitted.
• Consult an expert when in doubt as to the operation, the safety or the connection of the device.
• Measuring devices and accessories are no toys and do not belong in the hands of children!
• In commercial facilities, the regulations for the prevention of accidents as laid down by the professional
trade association for electrical equipment and devices must be observed.
• In schools, training centres, hobby and self-help workshops, the operation of measuring devices must be
supervised by trained personnel.
• Before measuring voltages, always make sure that the measuring device is not set to resistance or
insulation measuring range.
• The voltage between the connection points of the measuring device and the earth potential must not
exceed 1000 V DC/AC or 750 V/AC in CAT III.
• When using the measuring lines without cover caps, measurements between the meter and the earth
potential must not be performed above the measuring category CAT II.
• When measuring in the measuring category CAT III, the cover caps must be pushed onto the measuring
prods to avoid accidental short circuits during measurement.
• Push the cover caps onto the measuring prods until they latch. To remove, pull the caps from the prods
with a little force.
• The test prods have to be removed from the test object before the measuring range is changed.
• Pay particular attention when dealing with voltages exceeding 33 V AC or 70 V DC! If electrical conduc-
tors are touched, even these voltages involve the risk of a fatal electric shock.
• Before measuring, always check your measuring device and its measuring lines for damage. Never carry
out measurements when the protective insulation is damaged (ripped, torn off etc.).
• The enclosed measuring cables have a wear indicator. When they are damaged, a second insulation
layer in a different colour becomes visible. The measuring accessories must no longer be used and must
be replaced.
• To avoid an electric shock, do not to touch the connections/measuring points directly or indirectly during
measurements. When measuring, only touch within the tangible grip markings on the test prods and the
alligator clip.
• Do not use the measuring device shortly before, during or directly after an electrical storm (lightning! /
high-energy overvoltages!). Please make sure that your hands, your shoes, your clothing, the floor,
circuits and circuit components are dry.
• A void operation near strong magnetic or electromagnetic fields, transmitter aerials or HF generators. This
might lead to distorted measuring results.
• If you have reason to believe that the device can no longer be operated safely, disconnect it immediately
and make sure it is not unintentionally operated. It can be assumed that safe operation is no longer
possible if:
- the device shows visible damage,
- the device does not function any longer or
- after it has been stored under unfavourable conditions over a period of time or
- after it has been exposed to heavy stress during transport.
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