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3. Input protection measures
●When performing voltage measurements, the maximum input voltage that
can withstand is 1000V, either DC or AC.
●Can withstand no more than 250V AC voltage or equivalent effective
value voltage.
●When opening the case of the instrument or removing the battery cover, the
test lead should be pulled out first.
●When repairing the instrument, be sure to use the designated replacement
parts.
●Before turning on the instrument, you must disconnect all related power
sources, and you must also ensure that you do not have static electricity to
prevent damage to the components of the instrument.
●For accurate and correct calibration or maintenance of the instrument, you
should return it to the factory.
●When opening the case of the meter, it must be noted that some capacitors in
the meter still hold dangerous voltages even after the meter is powered off.
●If any abnormality is observed in the instrument, the instrument should be
stopped immediately and sent for repair. And make sure that it cannot be used
until it passes the inspection.
●When not in use for a long time, and avoid storing in places with high tempera-
ture and high humidity.
●This product uses 3.7V/1000mA lithium battery for power supply, and the
battery must be correctly installed in the battery box of the instrument.
●When the battery undervoltage symbol appears, please charge it in time. A
low battery can cause the meter to read incorrectly, which could result in electric
shock or personal injury.
●In the measurement category, the voltage measurement should not exceed
1000V.
●Do not use the instrument when the protective case (or part of it) is removed.
2. Safety Maintenance Habits
3
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