True-rms Multimeters 
 Making Basic Measurements  
 15 
To detect the presence of ac voltage, place the top of the 
Meter close to a conductor. The Meter gives an audible as 
well as visual indication when voltage is detected. There 
are two sensitivity settings. The “Lo” setting can be used 
on flush mounted wall sockets, power strips, flush 
mounted industrial outlets and various power cords. The 
“Hi” setting allows for ac voltage detection on other styles 
of recessed power connectors or sockets where the actual 
ac voltage is recessed within the connector itself. The 
VoltAlert detector works in bare wire applications with 
voltages as low as 24 V in the “Hi” setting. 
XW WARNING 
If there is no indication, voltage could 
still be present. Do not rely on the 
VoltAlert detector with shielded wire. 
Operation may be effected by 
differences in socket design, 
insulation thickness and type. 
Making Low Impedance Capacitance 
Measurements 
For making capacitance measurements on cables with 
ghost voltage, hold qwhile turning on the Meter to 
switch the Meter into LoZ, (low input impedance) 
Capacitance mode. In this mode, capacitance 
measurements will have a lower accuracy and lower 
dynamic range. This setting is not saved when the Meter is 
turned off or goes into sleep mode.
Testing Diodes 
Forward Bias
Single 
Beep
Reverse Bias
Shorted
and
Open
Bad Diode Bad Diode
Good Diode Good Diode
 
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