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Checking Wires
Use the voltage tester to test a powered electrical cable to
1.
make sure the voltage tester is working. If the voltage tester
lights up, it's working.
2.
To avoid electric shock, TURN OFF THE POWER by turning
off the circuit breaker before installation.
Note: You may need to shut off more than 1 circuit breaker or
switch to make sure the power is off.
3.
Unscrew and remove the faceplate from the old switch.
4.
Use the voltage tester to test around the old switch to make
sure that the power is OFF. Flip your switch on and off a few
times to confirm. The voltage tester should not light up, and
the light should not turn on.
5.
Unscrew and pull out the old switch (without detaching the
wires).
6.
Check to see if there are 4 wires connected to your old
switch. These wires are the ground, load, line (or "live"),
and neutral wires. If you do not see at least 4 wires in
the junction box, the smart dimmer switch may not be
compatible with that junction box. You can check other
switches in your home to see if there are compatible junction
boxes.
13
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