04
Testing AC Voltage (continued)
Sensitivity Select (AC Voltage Only)
Low Sensitivity
High Sensitivity
Reduce the Sensitivity
For more sensitivity touch the Magic Sense when testing.
To obtain a higher sensitivity and better visibility when
using the voltage tester hold by the tip and place the
magic sense towards the object being tested.
When holding the voltage tester in one hand, place your
other hand on the object being tested (eg. grip the wire)
to reduce sensitivity.
Note: Under a high humidity environment sensitivity may
be reduced.
ALWAYS make sure you have disconnected any AC mains or high voltage before beginning.
Polarity Check
The voltage tester identifies the polarity of DC voltage (3-36VDC).The voltage tester will
light up at positive only and will not light up at negative.
Electrical Check
The voltage tester can test and verify the connection of wire, plug sockets, fuses, bulbs,
heater/heating elements, toasters, fans etc.
Electronic Component Check
The voltage tester can test, check and identify the condition of rectifier, diode, resistor,
capacitor, transistor, cable, computer cable, PCB etc.
Battery Test
The voltage tester can roughly test the condition of a battery cell (1.5 volts and up). A
normal battery is when the LED lights up at the positive side, while a reverse indication
shows a weak/drained battery.
Wrong Connection Check
With the power off move the voltage tester close to a hairdryer.The red light will light up if
the plug is inserted wrong or a live wire is connected incorrectly to the socket.
Ground/Earthing Disconnected Check
With the power off move the voltage tester close to a toaster.The red light will light up when
the ground/earthing is not connected to the system.
Capacitor
The light comes on and then goes off. This indicates the capacitor is good when a similar
indication is shown by switching legs.
Diode Rectifier
The light lights up at a forward direction only.
Transistor (NPN Type)
The light lights up both at ‘C’ and ‘E’ with the finger touching at ‘B’
Transistor (PNP Type)
The light lights up at ‘B’ with the finger alternatively touching at ‘C’ and ‘E’
Ignition Check
The light flashes consistently when the voltage tester is moved close to the ignition wire with
high voltage pressure.
Fault Finding
Checks fault condition of wiring such as loose connection.
Locating Broken Wire
Run the voltage tester slowly along the wire.The voltage tester will light up where the wire
is broken.
Static Radiation from TV
The voltage tester is able to detect a safe distance of static radiation on TV.The approximate
safe distance is obtained when the red light turns off.
Checks AC Power
Find out the presence of AC voltage without the need to remove the plug.
Examples for Testing/Checking
Continuity Test
