SAFETY INSTRUCTIONS
•
WARNING
•
• You must confirm that the batteries powering the
VR40 are not weak or dead before you use the unit to
test for the presence of AC voltage. It is essential that
you do this
each time
you use the instrument.
The usual way to check the batteries is to insert the
blade tip into both slots of an outlet known to be
energized; if the beeper does not sound and the LED
does not light for either slot, replace both “AAA”
batteries before proceeding. Another simple way to
check for live batteries is to briskly rub the tip of the
unit through your hair; static electricity has more than
enough voltage to activate the beeper and LED.
• The VR40 is designed to indicate the presence of AC
voltage with an amplitude between 12VAC and
600VAC. Accordingly,
do not
assume that the absence
of a positive indication means that the circuit under
test is de-energized (not “hot”). Although they can
cause shock and/or serious personal injury, voltages
below 12V may not be detected by the VR40.
Whenever you have reason to suspect that a line or
outlet is “hot”, confirm your suspicion by measuring
the voltage of the line or outlet with a multimeter or
clamp meter.
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