7
switch has five wire connections, two travel wires, one black wire, one white neutral wire, and one green
grounding wire.Without these wires, it may not be compatible with the three-way smart switch.You can
check other switches to confirm compatibility.You can also seek help from local electricians to run the new
wiring.
About the Wires
Wire Nuts:
These are the cap-like objects connecting wires together, also known as twist-on wire
connectors.
Traveler
These wires connect the two wall switches together and allow power to pass between them. One of the
two traveler wires is always energized when power is on.All multi-way switches have a traveler wire.
Line
（
”Live”
）
switch A:
This wire carries power into the circuit from the main service panel; this is the source of
power for your light and will always be energized, regardless of how the switches are configured.
switch B:
This wire carries power from the switches to the light fixture; this wire will only be
energized when the light fixture is on. All switches have a line wire
CAUTION:
Never twine the load line and the line wire together or connect them both to the power line.
Never connect the neutral wire with any other wire.
Neutral
Some old switches do not have a neutral line. However, a neutral wire is required to install the smart
switch. This is because the smart switch needs to be powered on at all times to operate.
If you cannot find a neutral line in your switch junction box, contact a qualified
electrician to rewire the
switch.
