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IV
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To avoid damages to the instrument or probes, please do not expose them to fog, liquid,
or solvents.
Cleaning
Please perform the following steps to clean the instrument and probes regularly in
accordance with its operating conditions.
Disconnect the instrument from all power sources and then clean with a soft wet cloth.
Clean the loose dust on the outside of the instrument and probe with a soft cloth. When
cleaning the LCD, take care to avoid scratching it.
To avoid damage to the surface of the instrument and probe, please do not use any
corrosive liquid or chemical cleansers.
Make sure that the instrument is completely dry before restarting it to avoid potential short
circuits or personal injury.
Measurement Category
WARNING
Make sure that no measurement overvoltage reach the product, or else the
operator might expose to danger of electric shock.
Assurez-vous qu'aucune surtension de mesure n'atteigne le produit, sinon
l'opérateur pourrait s'exposer à un risque de choc électrique.
IEC61010-2-030 defines the measurement category to rate the ability of measuring
instruments to withstand short-term transient overvoltage outside of the working voltage.
This product and its accessories can only be used in the environment of the nominal
measurement category.
ï‚Ÿ 0- An instrument with no rated measurement category is used to measure circuits that
are not directly connected to the mains, such as a circuit board powered by a battery
or a secondary circuit with special protection. This measurement category is also
called CATâ… .
 CAT II：
For measurements installed in buildings, such as junction boxes, circuit breakers,
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