Fnirsi S1 Smart Digital Multimeter 9999counts Ac Dc Voltage Resistance Capacitance Diode Ncv Hz Live Wire

Digital Multimeter Instruction Manual - Page 4

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1.Safety Precautions
●Use the meter near the equipment with large electromagnetic interference,
the reading of the meter will be unstable, and even may produce larger errors.
●Do not use when the appearance of the meter or test leads is damaged.
●If the instrument is not used correctly, the safety function provided by the
instrument may be invalid.
Extreme care must be taken when working around exposed conductors or
busses.
●It is forbidden to use this instrument near explosive gas, steam or dust.
●The correct input terminal, function and range must be used for measure-
ment. The input value must not exceed the input limit value specified in each
range to prevent damage to the instrument.
●When the meter is connected to the line under test, do not touch the unused
input terminals.
●When the measured voltage exceeds the rms value of 60V DC or 30V AC, be
careful to prevent electric shock.
●When measuring with a test lead, place your finger behind the protective ring
of the test lead.
●Before changing the range, make sure that the test lead has left the circuit
under test.
●For all DC functions, in order to avoid the risk of electric shock due to possible
incorrect readings, please use the AC function first to confirm whether there is
any AC voltage. Then, select a DC voltage range that is equal to or greater than
the AC voltage.
●Before performing resistance measurement or continuity test, the power
supply of the circuit under test must be cut off, and all high-voltage capacitors in
the circuit under test must be discharged.
●Do not measure resistance or conduct continuity tests on live circuits.
●Do not put it in an explosive and flammable place when not in use.
●When repairing TV sets or measuring power conversion circuits, be careful of
high-amplitude voltage pulses in the circuit under test to avoid damage to the
meter.
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