•Use extreme caution when you work with voltages above 40V. Always disconnect power from the circuit you are measuring before you connect test probes to
•Never connect the test probes to a source of voltage when you select the Rx1K W or 150mA DC function.
•Always discharge filter capacitors in the power supply of the circuit under test before you attach test probes.
•Always turn off power and disconnect the test leads before you replace the batteries.
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