What are the safety precautions when using a multimeter?
a. Do not use damaged instruments. Before using the instrument, please check the instrument casing and pay attention to the insulation near the connection socket.
b. Check the test probe for damaged insulation or exposed metal, check the continuity of the probe, and replace the damaged probe before using the instrument.
c. When abnormal operation occurs, please do not use the instrument, as the protection may be damaged at this time. When in doubt, please send the instrument for inspection.
d. Please do not use this instrument near explosive gases, vapors, or dust.
e. Please do not input voltage exceeding the rated voltage indicated on the instrument between any two terminals or between any terminal and the ground.
f. Before use, please use the instrument to measure a known voltage to verify the instrument.
g. When measuring current, please turn off the power of the circuit before connecting the instrument to the circuit.
h. When repairing instruments, please only use the replacement parts indicated.
i. Please pay special attention when measuring the average AC voltage of 30V, peak voltage of 42V, or DC voltage above 60V, as such voltages can pose a risk of electric shock.
j. When using the test probe, please keep your fingers behind the stopper of the probe.
k. When measuring, please first connect the common test probe (black probe) and then connect the live probe (red probe); When disconnecting, please disconnect the live probe first, and then disconnect the common probe.
l. When opening the battery compartment, please remove all test probes from the instrument panel.
m. Do not use the instrument when the battery compartment or instrument housing is not tightly covered or loosened.
n. When the low voltage indicator symbol "" appears on the battery, please replace the battery as soon as possible to avoid electric shock or personal injury caused by incorrect readings.
o. Please do not use a multimeter to measure voltages outside the CAT classification level shown on the multimeter.
