13
SAFETY
When the unit gives a “NO VOLTAGE” reading (no
blinking motion of RED LED and beeping sound
BUZZER when touching the conductor), check the
unit on a known voltage source BEFORE touching
any conductor.
CAUTION
The unit will not detected shielded conductors,
as those in metal conduit, it will only detect metal
presence.
NOTE
1.- Some wall may contain metallised fibre for
fireproofing, this will spread the area of voltage
pick-up. Placing your free hand on the wall may
cancel effect.
2.- Rubbing or banging the unit on the wall may
generate static electricity and cause a false reading.
LEAKAGE CURRENTS
Because of the extremely small current required
to cause a reading on the unit, an apparent false
reading may be seen in some situation, for example a
conductor with poor insulation touching a damp wall,
will show a voltage on the wall. In this situation, the
unit is indicating a potential hazard which should be
checked with voltmeter.
