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11
Checking Wires
1. Use the voltage tester to test a powered electrical cable to
make sure the voltage tester is working. If the voltage tester
lights up, it’s working.
2. To avoid risk of electric shock, before installation, TURN
OFF THE POWER by turning off the circuit breaker.
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 light switch.
Do not detach the wires yet.
4. Use the voltage tester to test around the old light switch,
and ip your light switch on and off a few times to make sure
that the power is OFF. The voltage tester should not light up,
and the light should not turn on.
5. Unscrew and pull out the old light switch (without detaching
the wires).
6. Check to see if there are 5 wires connected to your old light
switch. These wires are the ground, 2 travelers, a line (or
“live”), and neutral wires. If you do not see 5 wires in the
junction box, the smart light switch may not be compatible.
You can check other light switches in your home to see
if there are any compatible light switches, or contact an
electrician to install the light switch.
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