5

Model UT231: OPERATING MANUAL

When measurement has been completed,
disconnect the connection between the test
leads and the circuit under test, remove the
testing leads away from the input terminals of
the Meter and turn the Meter power off.
Do not carry out the measurement when the
Meter’s back case and / or battery door is opened
to avoid electric shock.
When the Meter working at an effective voltage
over 30V in AC, special care should be taken.
Use the proper terminals and function for your
measurements.
Do not use or store the Meter in an environment
of high temperature, humidity, explosive,
inflammable and strong magnetic field.  The
performance of the Meter may deteriorate after
dampened.
Do not use the Meter if the surface of it is wet
or the user’s hands are wet.
When using the test leads, keep your fingers
behind the finger guards.
Replace the battery as soon as the battery

indicator     appears.  With a low battery, the
Meter might produce false readings that can
lead to electric shock and personal injury.
When opening the battery door, must make sure
the Meter is power off.
When servicing the Meter, use only the same
model number or identical electrical
specifications replacement parts.
The internal circuit of the Meter shall not be
altered at will to avoid damage of the Meter and
any accident.
Soft cloth and mild detergent should be used to
clean the surface of the Meter when servicing.
No abrasive and solvent should be used to
prevent the surface of the Meter from corrosion,
damage and accident.
Turn the Meter off when it is not in use and take
out the battery when not using for a long time.
Constantly check the battery as it may leak when
it has been using for some time, replace the
battery as soon as leaking appears.  A leaking
battery will damage the Meter.