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· Do not use the HOLD function to measure unknown voltage. After HOLD is
turned on, the display screen will not change when different voltages are
measured.
· Measure a known voltage to determine whether the instrument operates
normally.
· When measuring, the correct function and range gear must be used.
· Do not use the instrument around explosive gas and steam or in humid
environment.
Do not use damaged probes. Check whether the insulation of the probe is
damaged, whether there is exposed metal or signs of wear. Check the continuity
of the probes.
· When measuring, please connect the neutral wire or ground wire first, and then
the live wire; when disconnecting, please cut off the live wire first, and then
disconnect the neutral wire and ground wire.
· When measuring, please hold your fingers behind the probe finger protector.
· Please disconnect the probe from the measured object before opening the back
cover of the instrument.
· Do not use the instrument in an environment that exceeds the measurement
category (CAT) rating of the lowest rated single element in the instrument, probe
or accessories.
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